Statistics

Practice Questions

SAT Math › Statistics

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1

A police officer walked into a room full of suspects and turn out their pockets. The chart below shows the number of coins each man had.

Screen_shot_2013-09-04_at_10.20.59_am

The police claim the man with the amount of money closest to the arithmetic mean of the group is guilty. Who is it?

2

If the average of 5k and 3l is equal to 50% of 6l, what is the value of k/l ?

3

If Billy has an average of over 5 tests, what is the lowest score Billy can get over the next 3 tests in order to raise his average up to ?

4

What is the range of the following data set?

5

A police officer walked into a room full of suspects and turn out their pockets. The chart below shows the number of coins each man had.

Screen_shot_2013-09-04_at_10.20.59_am

The police claim the man with the amount of money closest to the arithmetic mean of the group is guilty. Who is it?

6

If Billy has an average of over 5 tests, what is the lowest score Billy can get over the next 3 tests in order to raise his average up to ?

7

What is the range of the following data set?

8

What is the range of the following data set?

9

This semester, Mary had five quizzes that were each worth 10% of her grade. She scored 89, 74, 84, 92, and 90 on those five quizzes. Mary also scored a 92 on her midterm that was worth 25% of her grade, and a 91 on her final that was also worth 25% of her class grade. What was Mary's final grade in the class?

10

If the average of 5k and 3l is equal to 50% of 6l, what is the value of k/l ?

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