Math 4 - 8 Domain IV Probability and Statistics

What is the mode of the data in the following sample?

8 , 12 , 9 , 6.5 , 9 , 16 , 22.5, 10

• 9

• 9.5

• 11.625

• 16

Mary did comparison shopping on her favorite brand of coffee. Over half of the stores priced the coffee at $1.70. Most of the remaining stores priced the coffee at $1.80, except for a few who charged $1.90. Which of the following statements is true about the distribution of prices?

• The mean and the mode are the same.

• The mean is greater than the mode

• The mean is less than the mode

• The mean is less than the median.

A coin is tossed and a die is rolled. What is the probabiity of landing on the head side of the coin and rolling a 3 on the dice?

• 1/2

• 1/6

• 1/12

• 1/15

What is the probability of drawing 2 consecutieve aces from a standard deck of cards?

• 3/51

• 1/221

• 2/104

• 2/52

What is the first, Second, and third quartile for the following?

5,5,5,6,7,9,9,10,11,12,13,13,14,15,16,17,17

• 5 , 10 ,15

• 6 , 11 , 16

• 6 , 11 , 14

• 7 , 11 , 14

Find the percentile of the score 98.

33,35,38,49,59,70,89,93,98,99,104,108

• 59 percentile

• 98 percentile

• 75 percentile

• 95 percentile

What is the range of the following numbers?

34 , 14 , 43 , 35 , 45 , 18 , 33 , 42

• 31

• 32

• 26

• 19

Compute the median for the following data set:

12 , 19 , 13 , 16 , 17 , 14

• 14.5

• 15.17

• 15

• 16

Corporate salaries are listed for several employees. Which would be the best measure of central tendency?

$24,000 $24,000 $26,000 $28,000 $30,000 $120,000

• mean

• median

• mode

• no difference

A student scored in the 87th percentile on a standardized test. Which would be the best interpretaion of his score?

• Only 13% of the students who took the test scored higher

• This student should be getting mostly Bs on his report card

• This student performed below average on the tesyt

• This is the equivalent of missing 13 questions on a 100 question exam.