Statistics - Ultra SAT Prep

Math Quiz -Statistics and Probability

Covering: mean, median, mode, range, standard deviation, data interpretation through graphs and charts, and basic probability, including compound events and independent events.

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1. A bag contains 4 red balls, 3 blue balls, and 2 green balls. If two balls are drawn without replacement, what is the probability of drawing a red ball followed by a blue ball?

a) 1-Jun

b) 1-Sep

c) 1-Dec

d) Jan-24

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2. A jar contains 5 red marbles, 7 blue marbles, and 3 green marbles. If a marble is drawn and then replaced, what is the probability of drawing a red marble twice in a row?

a) 1-May

b) 1-Sep

c) Jan-15

d) Jan-20

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3. A pair of unbiased dice are thrown. What is the probability of getting a total of 8 from the two dice?

a) 1-Sep

b) 2-Sep

c) May-36

d) 1-Jun

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4. A spinner is divided into eight equal parts, with each part representing a number from 1 to 8. What is the probability of spinning an even number?

a) 1-Feb

b) 1-Mar

c) 1-Apr

d) 1-Aug

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5. Eight friends each scored a different number of points in a game. Their scores were 15, 18, 20, 22, 25, 28, 30, and 34. What is the mean score?

a) 22

b) 24

c) 26

d) 28

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