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Mathematics · Class 9 · All

MathematicsClass 9AllEasy
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The arithmetic mean of a dataset is calculated by

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All 15 questions in this quiz

  1. Which statement about statistics is correct?

    1. Statistics studies only geometrical figures.
    2. Statistics deals with collecting, organizing, presenting, analyzing, and interpreting data.
    3. Statistics is used only in mathematics examinations.
    4. Statistics has no practical applications.

  2. Which statement is true about the arithmetic mean?

    1. It is always the largest observation.
    2. It is always the smallest observation.
    3. It represents the average value of the data.
    4. It is always one of the observations.

  3. If the sum of observations is 180 and the number of observations is 12, the mean is

    1. 12
    2. 14
    3. 15
    4. 18

  4. Which of the following is an example of statistical data?

    1. Length of a table
    2. Number of students in each class
    3. Angle of a triangle
    4. Radius of a circle

  5. The mean of identical observations is always

    1. Zero
    2. Equal to each observation
    3. Twice the observation
    4. Half the observation

  6. Which graph is commonly used to represent categorical data?

    1. Pie chart
    2. Bar graph
    3. Frequency polygon
    4. Histogram

  7. The total of all frequencies is equal to

    1. Mean
    2. Number of observations
    3. Largest observation
    4. Smallest observation

  8. A frequency distribution table helps to

    1. Increase the number of observations
    2. Organize data systematically
    3. Reduce the values of data
    4. Find the perimeter

  9. The mean of 8, 12, 16, 20, and 24 is

    1. 14
    2. 16
    3. 18
    4. 20

  10. The mean of the numbers 5, 10, 15, and 20 is

    1. 10
    2. 12.5
    3. 15
    4. 20

  11. The arithmetic mean of a dataset is calculated by

    1. Multiplying all observations
    2. Adding all observations and dividing by the number of observations
    3. Subtracting the smallest observation from the largest
    4. Dividing the largest value by the smallest

  12. Which measure of central tendency is studied in Class 9 Statistics?

    1. Mode only
    2. Mean only
    3. Median only
    4. Mean, Median, and Mode

  13. The number of times a particular observation occurs is called its

    1. Mean
    2. Frequency
    3. Median
    4. Range

  14. A collection of numerical facts is called

    1. Variable
    2. Observation
    3. Data
    4. Frequency

  15. Statistics is the branch of mathematics that deals with

    1. Shapes and figures
    2. Collection, organization, presentation, analysis, and interpretation of data
    3. Algebraic equations only
    4. Measurement of angles