Select Questions

Lessons 1 to 10

1. (Lesson 1) The Febonacchi sequence is an example of what type of sequence?
systematic
random

2. (Lesson 1) A roulette wheel manufacturer recorded the results of a roulette wheel for 5000 spins. He wanted to make sure that the results formed a ________ sequence.
random
systematic

3. (Lesson 2) The vertical axis of a histogram shows
average value
range of scores
possible values
relative frequency

4. (Lesson 2) What characteristic of people would you expect to have a normal distribution?
income
height
gender
eye color

5. (Lesson 3) Scores on a test range from 55 to 100. 200 students took the test. A good starting point for the histogram would be ____
50
80
60
70

6. (Lesson 3) Scores on a test range from 55 to 100. 200 students took the test. What would be a good interval size for a histogram?
1
50
5
25

7. (Lesson 4) What is the range of the following numbers? 5, 8, 12, 15
10
3
20
8

8. (Lesson 4) The range in heights of students at a college campus would be about
4 inches
24 inches
50 inches
8 inches

9. (Lesson 5) The standard deviation, SD, of a set of numbers is the r.m.s. value of the _________ from the mean.
squares
values
roots
deviations

10. (Lesson 5) Which set of numbers has the greater SD? I: -10 +10 II: 100 120
II
I
They are equal

11. (Lesson 6) The mean and SD of a set of numbers is 33.0 and 30,respectively. Each number in the set is increased by 5. (5 is added to each number) The new mean and SD are
33, 35
38, 35
38, 30
33, 30

12. (Lesson 6) The mean and SD of a set of numbers is 20.0 and 5,respectively. Each number in the set is multiplied by 0. The new mean and SD is
0, 0
20, 5
20, 0
0, 5

13. (Lesson 7) A person whose score on an IQ test was over 2 SDs above the mean score on the test would be
somewhat unintelligent compared to others.
about average when compared to others taking the test.
remarkably intelligent compared to others who took the test.

14. (Lesson 7) The percent of college students' weights that are expected to fall within 2 standard deviations above or below the mean is about
68%
100%
50%
95%

15. (Lesson 8) What is the 75th percentile for the set of scores below? 2, 5, 6, 7, 9, 10, 23, 25, 55
6
23
25
24

16. (Lesson 8) The box and whisker plot is a good way to illustrate
the five number summary
the mean and standard deviation

17. (Lesson 9) The __________ is sensitive to extreme scores whereas the ____________ is not.
median, mean
mean, median

18. (Lesson 9) Saying that a set of scores is not skewed means that
no statement about the values of the mean and median can be made
the mean and median agree in value

19. (Lesson 10) Calculate the % of the patients in a study who had IQ scores 120 and above. The scores were 102, 104, 106, 107, 110, 115, 120, 121, 122, 125
40 %
45.5 %
50 %
30 %

20. (Lesson 10) A physician doing research on the improvement of cancer patients who took a new drug found that _______% of the following patients improved, coded 0 for no improvement and 1 for improved. The patients' scores were 0 1 0 1 0 1 1 1 0 0 0 1 0 1 0 1 1 1 0 0
40
50
70
60