Introduction Quiz - CBSE Class 7 Mathematics

Free practice quiz: Introduction (CBSE Class 7 Mathematics). 16 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is statistics used for?

   1. Collecting and analyzing data
   2. Solving algebra problems
   3. Understanding chemical reactions
   4. Drawing geometric shapes
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   Answer: A. Collecting and analyzing data

   Statistics is a branch of mathematics dealing with data collection, organization, analysis, interpretation, and presentation.

2. Which measure of central tendency divides a data set into two equal halves?

   1. Mean
   2. Median
   3. Mode
   4. Range
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   Answer: B. Median

   The median is the middle number of a data set, dividing the data into two equal parts.

3. Which of the following statements is true about the mean, median, and mode?

   1. They are all always the same
   2. They are metric units
   3. They are winter sports
   4. They are measures of central tendency
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   Answer: D. They are measures of central tendency

   Mean, median, and mode are all measures of central tendency used to summarize a set of data.

4. If a data set's numbers are mostly low with a few high outliers, which measure of central tendency is likely most affected?

   1. Mean
   2. Median
   3. Mode
   4. Range
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   Answer: A. Mean

   The mean is affected by outliers because it takes every value into account. High outliers can significantly increase the mean.

5. If a data set consists entirely of the same number, what is the range?

   1. 0
   2. 1
   3. Equal to the number itself
   4. Undefined
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   Answer: A. 0

   When all numbers in a data set are the same, the difference between the highest and lowest value (the range) is 0.

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