1. (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.
2. (Lesson 1) The Febonacchi sequence is an example of what type of sequence?
3. (Lesson 2) Bill tosses 2 coins. What is the most likely number of heads?
4. (Lesson 2) What characteristic of people would you expect
to have a normal distribution?
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 ____
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?
7. (Lesson 4) In an experiment evaluating a diet, the mean weight loss was 10.4 lb.
This means that every person lost roughly 10.4 lb.
8. (Lesson 4) What is the range of these numbers?
-5 -3 -1
9. (Lesson 5) Which set of numbers has the smaller SD?
I: 1 2 3 4 5
II: 10 20 30 40 50
10. (Lesson 5) Which set of numbers has the SD equal to zero?
I: 1 3 5 7
II: 5 5 5 5
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
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
13. (Lesson 7) If scores on an extroversion scale were collected for all 8th graders in a middle school,
what percent of their scores would be expected to fall between +1 and -1 standard deviations from the mean?
14. (Lesson 7) A person whose score on an IQ test was over 2 SDs
above the mean score on the test would be
15. (Lesson 8) What is the 25th percentile for the set of scores below?
2, 5, 6, 7, 9
16. (Lesson 8) What is the median for the set of scores below?
2, 4, 6, 8
17. (Lesson 9) The sum of the deviations less than the ______________ is equal
to the sum of the deviations greater than the ____________.
18. (Lesson 9) That a set of scores is skewed to the right (toward higher scores)
means that
19. (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
20. (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
