Mathematics Practice Test – Statistics

Hello and Welcome to Mathematics Practice Tests - Statistics

1. You are to attempt 5 random objectives questions ONLY.
2. Supply Your Full Name and Location in the text box below and begin immediately.
3. You can attempt as many times as possible

The pie chart shows the distribution of 600 Mathematics textbooks for Arts, Business, Science and Technical classes.

What percentage of the total number of textbooks belongs to science?

A. $12\frac{1}{2}$ %     B. $20\frac{5}{6}$ %    C. 25%     D. $41\frac{2}{3}$ %

Find the variance of 1, 2, 0, -3, 5, -2, 4

A. $\frac{52}{7}$     B. $\frac{40}{7}$     C. $\frac{32}{7}$     D. $\frac{27}{7}$

The bar chart shows the frequency distribution of marks scored by students in a class test.

How many students are in the class?

A. 10     B. 24     C. 25     D. 30

Find the standard deviation of the above distribution.

A. $\sqrt{5}$     B. $\sqrt{3}$     C. $\sqrt{7}$     D. $\sqrt{2}$

Given that the mean of the scores 15, 21, 17, 26, 18 and 29 is 21, calculate the standard deviation of the scores.

A. $\sqrt{10}$     B. 4     C. 5     D. $\sqrt{30}$

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