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 (C)</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 (D)</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 (D)</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 (A)</p> Signup and view all the answers

What is sample bias in research?

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

What is the primary advantage of using anonymous surveys?

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

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

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

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

<p>Q3 - Q1 (D)</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 (A)</p> Signup and view all the answers

What is the purpose of classifying data?

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

What is the definition of the median?

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

What is the calculation for the mean?

<p>Sum of all values / Number of values (C)</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 (B)</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 (D)</p> Signup and view all the answers

What is the purpose of using histograms?

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

What is the main purpose of using bar graphs?

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

What is the primary purpose of using histograms?

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

What is the main purpose of using scatter plots?

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

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

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

What is the purpose of using percentiles?

<p>To understand the distribution of data (B)</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 (D)</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 (D)</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 (A)</p> Signup and view all the answers

What is the main purpose of using bar graphs?

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

What is the definition of quartiles?

<p>Values that divide the data set into four equal parts (B)</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. (B)</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. (C)</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. (D)</p> Signup and view all the answers

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

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

What is the purpose of classifying data?

<p>To group data based on shared characteristics (B)</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. (A)</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 (D)</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. (A)</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 (D)</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. (C)</p> Signup and view all the answers

What is the purpose of defining the population in research?

<p>To select a representative sample. (C)</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 (D)</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 (B)</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. (D)</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 (C)</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 (A)</p> Signup and view all the answers

What is the purpose of using grouped frequency tables?

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

What is the purpose of organising data?

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

Why is it important to define the population in research?

<p>To select a representative sample (D)</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 (B)</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 (B)</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 (B)</p> Signup and view all the answers

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

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

What is the primary purpose of organising data?

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

What is a limitation of using interviewers in data collection?

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

What is the primary advantage of using frequency tables?

<p>To show the distribution of data (B)</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 (C)</p> Signup and view all the answers

What is a benefit of using tally marks?

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

What is the primary purpose of classifying data?

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

What is the purpose of summarising data?

<p>To simplify and facilitate analysis (D)</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 (B)</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 (B)</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 (D)</p> Signup and view all the answers

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

<p>Histogram (C)</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 (B)</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 (D)</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 (A)</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 (C)</p> Signup and view all the answers

What is the main purpose of using bar graphs?

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

What is the primary purpose of using scatter plots?

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

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

<p>To minimize sample bias (A)</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 (D)</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 (B)</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 (B)</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 (B)</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 (C)</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 (B)</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 (C)</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 (B)</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 (C)</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 (A)</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 (D)</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 (C)</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 (B)</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 (C)</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 (A)</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 (C)</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 (D)</p> Signup and view all the answers

Which of the following is a characteristic of a histogram?

<p>Bars touch each other (D)</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 (C)</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 (B)</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 (D)</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 (A)</p> Signup and view all the answers

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

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

Which of the following is a type of bar graph?

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

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