Gr 12 Math Lit: Ch 2.4 Representing, Interpreting and Analysing Data
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Questions and Answers

What is the primary purpose of a line graph?

  • To study the correlation between two variables
  • To compare the number of items in different categories
  • To show the distribution of data over a range of values
  • To show the relationship between two quantities over time (correct)

    • What is the main feature of a bar graph?

  • Bars show the number of items in each category, with spaces between the bars (correct)
  • Bars are used to show the correlation between two variables
  • Bars are connected by straight lines
  • Bars touch each other to represent continuous data

    • What is the purpose of a scatter plot?

  • To show the distribution of data over a range of values
  • To show the relationship between two variables over time
  • To study the relationship between two variables (correct)
  • To compare the number of items in different categories

    • What is the primary purpose of a histogram?

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

    What is the purpose of a box and whisker plot?

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

    What is the main feature of a pie chart?

    <p>A circular graph divided into sectors, representing percentages that add up to 100%</p> Signup and view all the answers

    What is a key feature of a graph when creating it?

    <p>The dependent variable is usually on the vertical axis, and the independent variable is on the horizontal axis</p> Signup and view all the answers

    What is the purpose of a graph when exploring relationships?

    <p>To identify patterns and relationships within data</p> Signup and view all the answers

    What is the main advantage of using the median as a measure of central tendency?

    <p>It is not affected by outliers</p> Signup and view all the answers

    What is the purpose of quartiles in a data set?

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

    What is the main difference between a histogram and a bar graph?

    <p>A histogram is used for continuous data, while a bar graph is used for categorical data</p> Signup and view all the answers

    What is the calculation for the interquartile range (IQR) of a data set?

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

    What is the purpose of a box and whisker plot?

    <p>To summarize data distributions and identify outliers</p> Signup and view all the answers

    What is the definition of a percentile?

    <p>A value that divides the data set into 100 equal parts</p> Signup and view all the answers

    What is the main advantage of using a scatter plot?

    <p>It identifies correlations between two variables</p> Signup and view all the answers

    What is the main difference between a line graph and a bar graph?

    <p>A line graph is used to show trends over time, while a bar graph is used to compare categories</p> Signup and view all the answers

    Which type of graph is best suited to show the relationship between two variables?

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

    What is a key feature of a histogram?

    <p>Bars touch each other, indicating continuous data</p> Signup and view all the answers

    What is the primary purpose of a pie chart?

    <p>To show parts of a whole</p> Signup and view all the answers

    When creating a graph, what is essential to include?

    <p>Proper labels on the axes, highlighting key findings, and showing relationships</p> Signup and view all the answers

    Which type of graph is used to display data sorted into categories?

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

    What is the purpose of a box and whisker plot?

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

    What is a common use of graphs in data analysis?

    <p>To explore relationships, display and report findings, and identify patterns</p> Signup and view all the answers

    Which type of graph is used to show the relationship between two quantities over time?

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

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

    <p>It provides a specific value that represents the central point of the data set.</p> Signup and view all the answers

    Which graph is most suitable for identifying correlations between two variables?

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

    What does the range of a data set indicate?

    <p>The spread of the data set.</p> Signup and view all the answers

    What is the main advantage of using quartiles in a data set?

    <p>They show the spread and distribution of data.</p> Signup and view all the answers

    What is the purpose of a histogram in analysing data?

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

    What is the main difference between the median and the mode?

    <p>The median is the middle value in an ordered data set, while the mode is the value that appears most frequently.</p> Signup and view all the answers

    What is the purpose of a box and whisker plot in analysing data?

    <p>To summarize data distributions.</p> Signup and view all the answers

    What does the interquartile range (IQR) of a data set represent?

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

    Which type of graph is best suited to display the distribution of a continuous variable?

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

    What is the primary purpose of highlighting key findings in a graph?

    <p>To display data findings in a concise manner</p> Signup and view all the answers

    Which type of graph is used to display data that is sorted into categories, with spaces between the bars?

    <p>Bar Graph</p> Signup and view all the answers

    What is the purpose of the five-number summary in a box and whisker plot?

    <p>To summarize data using the minimum, Q1, median, Q3, and maximum</p> Signup and view all the answers

    Which type of graph is used to show the relationship between two variables, with each point representing a pair of values?

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

    What is the primary purpose of using a graph to display data?

    <p>To explore relationships within data</p> Signup and view all the answers

    Which type of graph is used to show parts of a whole, with each sector representing a percentage?

    <p>Pie Chart</p> Signup and view all the answers

    What is the primary purpose of properly labeling axes in a graph?

    <p>To clearly represent the dependent and independent variables</p> Signup and view all the answers

    Which measure of central tendency is most affected by extreme values in a data set?

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

    What is the primary purpose of finding the quartiles in a data set?

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

    Which type of graph is most suitable for displaying the distribution of continuous data?

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

    What does the interquartile range (IQR) represent in a data set?

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

    Which measure of central tendency is most suitable for categorical data?

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

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

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

    Which type of graph is most suitable for identifying correlations between two variables?

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

    What is the primary purpose of finding the range of a data set?

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

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