SAT Maths- Statistics

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Question 1

What is the median of the following set of numbers: 3, 5, 7, 9, 11, 13, 15

  • 7

  • 9

  • 11

  • 13

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Question 2

What is the range of the following data set: 21, 15, 32, 28, 19, 25

  • 17

  • 15

  • 13

  • 11

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Question 3

What is the mean of the following numbers: 12, 15, 18, 22, 25

  • 18.4

  • 20.2

  • 19.6

  • 17.2

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Question 4

The Set of Numbers is 2, 4, 4, 4, 5, 5, 7, 9, What is the Standard Deviation Approximately

  • 2.0

  • 1.5

  • 1.2

  • 1.0

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Question 5

A bag contains 3 red, 4 green, and 5 blue marbles. What is the probability of drawing a green marble?

  • 1/4

  • 1/3

  • 2/5

  • 4/12

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Question 6

What is the interquartile range (IQR) of the data set: 5, 7, 8, 12, 13, 14, 16, 20?

  • 7

  • 6

  • 5

  • 4

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Question 7

Calculate the variance of the numbers: 6, 8, 10, 12, 14.

  • 8

  • 10

  • 12

  • 6

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Question 8

For a data point with a value of 20 in a distribution with a mean of 15 and a standard deviation of 5, what is the z-score?

  • 1

  • 2

  • 0.5

  • 3

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Question 9

If the correlation coefficient between two variables is -0.85, what can be said about their relationship?

  • Strong positive correlation

  • Weak positive correlation

  • Strong negative correlation

  • No correlation

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Question 10

If P(A) = 0.5 and P(B) = 0.3, and P(A and B) = 0.15, what is P(B|A)?

  • 0.6

  • 0.5

  • 0.45

  • 0.3

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