Gr 12 Math Lit: Ch 2 Sum Data Handling
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Questions and Answers

What is the main advantage of open-ended questions in research?

  • They can yield detailed and qualitative insights (correct)
  • They provide predefined options for respondents
  • They are quick to answer and analyse
  • They accommodate all respondents' views

    • What is the primary influence on the choice of sample and data collection method in research?

  • Research question
  • Research aim (correct)
  • Population size
  • Sample bias

    • What is the main disadvantage of closed questions in research?

  • They provide incomplete answers
  • They are time-consuming to answer and analyse
  • They may not accommodate all respondents' views (correct)
  • They are not useful for collecting quantitative data

    • What is the term for a subset of the population chosen to represent it in research?

    <p>Sample</p> Signup and view all the answers

    What is the main advantage of observation as a data collection method in research?

    <p>It avoids interaction biases</p> Signup and view all the answers

    What is the main disadvantage of observation as a data collection method in research?

    <p>It is limited to observable phenomena</p> Signup and view all the answers

    What is a questionnaire in research?

    <p>A list of questions given to respondents to collect data directly from them</p> Signup and view all the answers

    What is sample bias in research?

    <p>When the sample does not accurately represent the population</p> Signup and view all the answers

    What is the main purpose of using percentiles in data analysis?

    <p>To understand the distribution of data and compare individual values to the entire data set</p> Signup and view all the answers

    What is the primary advantage of using anonymous surveys?

    <p>They encourage honesty</p> Signup and view all the answers

    What type of graph is used to show the relationship between two variables?

    <p>Scatter plot</p> Signup and view all the answers

    What is the main disadvantage of using interviews in data collection?

    <p>They are time-consuming and may introduce interviewer bias</p> Signup and view all the answers

    What is the calculation for the Interquartile Range (IQR)?

    <p>Q3 - Q1</p> Signup and view all the answers

    What is the purpose of using box and whisker plots?

    <p>To summarize data using the five-number summary</p> Signup and view all the answers

    What is the purpose of classifying data?

    <p>To simplify the data for better understanding and analysis</p> Signup and view all the answers

    What is the purpose of using tally marks?

    <p>To count how many items fall into each category</p> Signup and view all the answers

    What is the definition of the median?

    <p>The middle value in an ordered data set</p> Signup and view all the answers

    What is the main purpose of using line graphs?

    <p>To show the relationship between two quantities over time</p> Signup and view all the answers

    What is the definition of a frequency table?

    <p>A table that displays the frequency of various outcomes in a sample</p> Signup and view all the answers

    What is the formula for calculating the mean?

    <p>Add all the values together and divide by the number of values</p> Signup and view all the answers

    What is the calculation for the mean?

    <p>Sum of all values / Number of values</p> Signup and view all the answers

    What is the purpose of using the median?

    <p>It is less affected by outliers and skewed data than the mean</p> Signup and view all the answers

    What is the definition of the interquartile range?

    <p>The range of the middle 50% of the data</p> Signup and view all the answers

    What is the purpose of using histograms?

    <p>To represent continuous data grouped into ranges</p> Signup and view all the answers

    What is the definition of the range?

    <p>The difference between the highest and lowest values in the data set</p> Signup and view all the answers

    What is the main purpose of using bar graphs?

    <p>To represent data sorted into categories</p> Signup and view all the answers

    What is the purpose of using quartiles?

    <p>To help understand the spread and distribution of the data</p> Signup and view all the answers

    What is the calculation for the upper quartile (Q3)?

    <p>The median of the upper half of the data set</p> Signup and view all the answers

    What is the primary purpose of using histograms?

    <p>To represent continuous data grouped into ranges</p> Signup and view all the answers

    What is the advantage of using the median over the mean?

    <p>It is less affected by outliers</p> Signup and view all the answers

    What is the main purpose of using scatter plots?

    <p>To study the relationship between two variables</p> Signup and view all the answers

    What is the calculation for the Interquartile Range (IQR)?

    <p>Q3 - Q1</p> Signup and view all the answers

    What is the purpose of using percentiles?

    <p>To understand the distribution of data</p> Signup and view all the answers

    What is the main purpose of using box and whisker plots?

    <p>To display the five-number summary</p> Signup and view all the answers

    What is the primary purpose of using line graphs?

    <p>To show the relationship between one variable over time</p> Signup and view all the answers

    What is the advantage of using graphs in data analysis?

    <p>They provide a clear and concise way to present data findings</p> Signup and view all the answers

    What is the main purpose of using bar graphs?

    <p>To display the distribution of categorical data</p> Signup and view all the answers

    What is the definition of quartiles?

    <p>Values that divide the data set into four equal parts</p> Signup and view all the answers

    What is the primary advantage of using open-ended questions in research?

    <p>They provide insightful and qualitative data.</p> Signup and view all the answers

    What is the main purpose of selecting a sample instead of the population in research?

    <p>To reduce the cost and time of data collection.</p> Signup and view all the answers

    What is the main limitation of using questionnaires in research?

    <p>They may not capture respondents' attitudes or opinions.</p> Signup and view all the answers

    What is the main advantage of using anonymous surveys in research?

    <p>Encouragement of honest responses</p> Signup and view all the answers

    What is the purpose of classifying data?

    <p>To group data based on shared characteristics</p> Signup and view all the answers

    What is the primary reason for using random sampling in research?

    <p>To minimize sample bias and ensure accurate results.</p> Signup and view all the answers

    What is the definition of a frequency table?

    <p>A table that displays the frequency of various outcomes in a sample</p> Signup and view all the answers

    What is the primary advantage of using observation as a data collection method?

    <p>It avoids interaction biases and captures behavioural data.</p> Signup and view all the answers

    What is the purpose of using quartiles in data analysis?

    <p>To divide the data set into four equal parts</p> Signup and view all the answers

    What is the primary disadvantage of using closed questions in research?

    <p>They may not accommodate all respondents' views.</p> Signup and view all the answers

    What is the purpose of defining the population in research?

    <p>To select a representative sample.</p> Signup and view all the answers

    What is the main disadvantage of using interviews in research?

    <p>They are time-consuming and may introduce interviewer bias</p> Signup and view all the answers

    What is the purpose of using tally marks in data analysis?

    <p>To count discrete data quickly and efficiently</p> Signup and view all the answers

    What is the primary reason for using a questionnaire in research?

    <p>To collect data directly from respondents.</p> Signup and view all the answers

    What is the main advantage of using the median in data analysis?

    <p>It is less affected by outliers and skewed data</p> Signup and view all the answers

    What is the definition of the range in data analysis?

    <p>The difference between the highest and lowest values in the data set</p> Signup and view all the answers

    What is the purpose of using grouped frequency tables?

    <p>To organize continuous data into specified intervals</p> Signup and view all the answers

    What is the purpose of organising data?

    <p>To simplify the data for better understanding and analysis</p> Signup and view all the answers

    Which of the following research questions is most likely to yield detailed and qualitative insights?

    <p>A question allowing respondents to answer in their own words</p> Signup and view all the answers

    What is the primary reason for using random sampling in research?

    <p>To minimize sample bias and control for demographic factors</p> Signup and view all the answers

    What is the main limitation of using questionnaires in research?

    <p>They may not accommodate all respondents' views</p> Signup and view all the answers

    Which of the following is a characteristic of observation as a data collection method?

    <p>It avoids interaction biases and is useful for collecting behavioral data</p> Signup and view all the answers

    Why is it important to define the population in research?

    <p>To select a representative sample</p> Signup and view all the answers

    What is the main advantage of using closed questions in research?

    <p>They are easier to analyze and compare</p> Signup and view all the answers

    What is the primary influence on the choice of data collection method in research?

    <p>The research question</p> Signup and view all the answers

    What is the main disadvantage of sample bias in research?

    <p>It fails to represent the population accurately</p> Signup and view all the answers

    What is a key benefit of using anonymity in data collection?

    <p>Greater honesty in participant responses</p> Signup and view all the answers

    What is the primary purpose of organising data?

    <p>To simplify and facilitate analysis</p> Signup and view all the answers

    What is a limitation of using interviewers in data collection?

    <p>Increased risk of interviewer bias</p> Signup and view all the answers

    What is the primary advantage of using frequency tables?

    <p>To show the distribution of data</p> Signup and view all the answers

    What is the purpose of using quartiles in data analysis?

    <p>To understand the spread and distribution of data</p> Signup and view all the answers

    What is a benefit of using tally marks?

    <p>To count discrete data quickly and efficiently</p> Signup and view all the answers

    What is the primary purpose of classifying data?

    <p>To simplify and facilitate analysis</p> Signup and view all the answers

    What is a limitation of using the mean as a measure of central tendency?

    <p>It is sensitive to outliers</p> Signup and view all the answers

    What is the purpose of summarising data?

    <p>To simplify and facilitate analysis</p> Signup and view all the answers

    What is a benefit of using measures of spread in data analysis?

    <p>To understand the distribution and variability of the data</p> Signup and view all the answers

    What is the primary purpose of using percentile in data analysis?

    <p>To understand the distribution of data</p> Signup and view all the answers

    What is the main advantage of using box and whisker plots?

    <p>To summarize data using the five-number summary</p> Signup and view all the answers

    What type of graph is used to show the distribution of continuous data?

    <p>Histogram</p> Signup and view all the answers

    What is the primary purpose of using quartiles in data analysis?

    <p>To summarize data into four equal parts</p> Signup and view all the answers

    What is the main difference between line graphs and scatter plots?

    <p>Line graphs show the relationship between two variables, while scatter plots show the distribution of data</p> Signup and view all the answers

    What is the primary purpose of using the median in data analysis?

    <p>To provide the central point of the data set, less affected by outliers</p> Signup and view all the answers

    What is the primary advantage of using box and whisker plots over histograms?

    <p>Box and whisker plots provide a more detailed summary of the data</p> Signup and view all the answers

    What is the main purpose of using bar graphs?

    <p>To represent data sorted into categories</p> Signup and view all the answers

    What is the primary difference between the interquartile range (IQR) and the range?

    <p>The IQR is less sensitive to outliers, while the range is more robust</p> Signup and view all the answers

    What is the primary purpose of using scatter plots?

    <p>To study the relationship between two variables</p> Signup and view all the answers

    What is the primary limitation of using open-ended questions in research?

    <p>They may be time-consuming to answer and analyze</p> Signup and view all the answers

    What is the primary advantage of using a sample instead of the population in research?

    <p>It is more cost-effective</p> Signup and view all the answers

    What is the primary reason for using random sampling in research?

    <p>To minimize sample bias</p> Signup and view all the answers

    What is the primary disadvantage of using questionnaires in research?

    <p>They may not capture respondents' attitudes or opinions</p> Signup and view all the answers

    What is the primary purpose of defining the population in research?

    <p>To ensure that the sample is representative</p> Signup and view all the answers

    What is the primary advantage of using observation as a data collection method?

    <p>It avoids interaction biases</p> Signup and view all the answers

    What is the primary limitation of using closed questions in research?

    <p>They may not accommodate all respondents' views</p> Signup and view all the answers

    What is the primary purpose of using a sample bias solution in research?

    <p>To minimize sample bias</p> Signup and view all the answers

    What is the primary advantage of using interviews in research?

    <p>To clarify ambiguous answers and probe for more detailed information</p> Signup and view all the answers

    What is the main purpose of using tally marks in data analysis?

    <p>To count discrete data quickly and efficiently</p> Signup and view all the answers

    What is the primary purpose of using scatter plots in data analysis?

    <p>To study the relationship between two variables</p> Signup and view all the answers

    What is the primary advantage of using frequency tables in data analysis?

    <p>To identify patterns and trends in the data</p> Signup and view all the answers

    What is the primary purpose of classifying data?

    <p>To simplify the data for better understanding and analysis</p> Signup and view all the answers

    Which of the following is a limitation of using the mean as a measure of central tendency?

    <p>It is sensitive to outliers</p> Signup and view all the answers

    What is the main purpose of using measures of central tendency in data analysis?

    <p>To provide a single value that represents the central point of the dataset</p> Signup and view all the answers

    What is the primary purpose of using percentiles in data analysis?

    <p>To understand the distribution of data and compare individual values</p> Signup and view all the answers

    What is the primary advantage of using the median over the mean in data analysis?

    <p>The median is less affected by outliers and skewed data</p> Signup and view all the answers

    Which of the following graphs is used to show the relationship between two variables over time?

    <p>Line graph</p> Signup and view all the answers

    What is the primary purpose of using measures of spread in data analysis?

    <p>To understand the spread and distribution of the data</p> Signup and view all the answers

    What is the primary purpose of using box and whisker plots in data analysis?

    <p>To summarize data using the five-number summary</p> Signup and view all the answers

    Which of the following is a characteristic of a histogram?

    <p>Bars touch each other</p> Signup and view all the answers

    What is the primary purpose of using quartiles in data analysis?

    <p>To divide the data into four equal parts</p> Signup and view all the answers

    What is the primary advantage of using grouped frequency tables in data analysis?

    <p>To organize continuous data into specified ranges</p> Signup and view all the answers

    What is the primary purpose of using the median as a measure of central tendency?

    <p>To represent the central point of the data set less affected by outliers</p> Signup and view all the answers

    What is the primary purpose of using summarising data in data analysis?

    <p>To simplify the data for better understanding and analysis</p> Signup and view all the answers

    Which of the following is a characteristic of a bar graph?

    <p>Bars are separated by spaces</p> Signup and view all the answers

    What is the primary purpose of using the interquartile range (IQR) in data analysis?

    <p>To measure the spread of the central portion of the data</p> Signup and view all the answers

    Which of the following is a type of bar graph?

    <p>Compound bar graph</p> Signup and view all the answers

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