Mathematics Practice Test – Statistics

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

Calculate the mean of the distribution.

A. 6.0    B. 3.0    C. 2.4    D. 1.8


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 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} %


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

A.     B. 4     C. 5     D.



The pie chart shows the distribution of courses offered by students. What percentage of the students offer English?

A. 30%     B. 25%     C. 35%     D. 20%


 



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