1. Find the mode of the following data:
15, 19, 17, 20, 25, 19, 17, 22, 17
(1) 17
(2) 19
(3) 22
(4) 25
2. If the height of four tennis players are 172 cm, 166 cm, 162 cm, and 172 cm, what is the median height of these tennis players?
(1) 166 cm
(2) 168 cm
(3) 169 cm
(4) 172 cm
3. Express, in terms of x, the mean of 2x+4 and 6x-8.
(1) 2x + 4
(2) 4x - 2
(3) 6x - 8
(4) 8x - 4
4. For the data 7, 7, 9, 10, 17, which of the following statement is true?
(1) mean = median
(2) median = mode
(3) mean > mode
(4) mean < mode
5. Susan received 82, 89, and 78 on the first three tests in her Statistics class. What is the lowest score that she must receive on her next test in order to have at least an average of 85 in the class?
(1) at least 78
(2) at least 82
(3) at least 89
(4) at least 91
6. In the set of scores below, how many scores are less than the median? 69, 50, 62, 42, 52
(1) 1
(2) 2
(3) 3
(4) 4
7. Find the mean of the following numbers:
0.35, 0.5, 1/4, 0.75, 3/5, 0.25
(1) 0.25
(2) 0.35
(3) 0.45
(4) 0.50
8. Five girls in a JV volleyball team reported the number of boxes of candies that they sold in an academic year:
30, 30, 50, 60, 80. Which of the following is true?
(1) The median is equal to the mode
(2) The mean is 20
(3) The median is 20
(4) The mean is equal to the median
9. For which set of data do the mean, median, and mode all have the same value?
(1) 7, 9, 9, 9, 11
(2) 7, 7, 8, 11, 12
(3) 7, 7, 7, 8, 11
(4) 7, 7, 9, 11, 16
10. A number is selected at random from the set 2,2,2,2,3,3,3,7. Find the probability that the number selected is the mode.
(1) 0
(2) 1/8
(3) 3/8
(4) 4/8
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