QUESTION 1

- A set of all possible data values for a subject under consideration is called ___.
- descriptive statistics
- a sample
- a population
- inferential statistics

**5 points **

QUESTION 2

- Which of the following can be classified as Discrete and Quantitative data.
- The acceleration of your car as you drive to school.
- The different colors of the eyes of your classmates.
- The number of students in your school.
- The height of all the people in your neighborhood.

**5 points **

QUESTION 3

- Can a frequency distribution have overlapping classes?
- Sometimes
- No
- Yes
- Can’t determine. I need more information.

**5 points **

QUESTION 4

- For a 10 point quiz, the professor recorded the following scores for 8 students:
- 7, 8, 3, 9, 10, 6, 8, 5
- What is the Mean for this set of scores?
- 7.0
- 6.9
- 7.5
- 8.0

**5 points **

QUESTION 5

- What type of distribution is described by the following information?
- Mean = 56 Median = 58.1 Mode = 63
- (Left) negatively skewed
- Symmetrical (Normal)
- Bimodal
- Right (positively) skewed

**5 points **

QUESTION 6

- In a standardized IQ test, the mean score is 100 and the standard deviation is 15. According to the Empirical rule, 95 % of all those who took the test should have scores between
- 70 & 130
- 85 & 115
- 55 & 145
- 100 & 130

**5 points **

QUESTION 7

- A Statistics teacher has the following test scores : 93, 72, 80, 95, 90, 70, 91, 85, 86, 100 What is the median test score of these grades?
- 90
- 88
- 95
- 80

**5 points **

QUESTION 8

- There are 10 colored balls in a box ( 5 red, 3 blue, 2 green ). What is the probability of picking out a red ball and then a blue ball ( If I do not replace the red ball )?
- 1/6
- 1/2
- 3/20
- 4/5

QUESTION 10

- If I go into an ice cream parlor, and I have the choice of having one of 10 different flavors, with one of 5 different toppings and one of 3 different types of cones, How many times can I come back to this place and get a different ice cream cone combination?
- 10
- 50
- 150
- 300

QUESTION 12

- The area under a normal curve distribution is
- Equal to 100
- almost equal to 1
- equal to 1
- equal to .5

**5 points **

QUESTION 13

- According to the Central Limit Theorem, The traditional sample size that separates a large sample size from a small sample size is one that is greater than
- 100
- 30
- 500
- 20

**5 points **

QUESTION 14

- Consider a binomial random variable where the number of trials is 12 and the probability of success on each trial is 0.25. Find the mean and standard deviation of this random variable.
- Mean = 3 , Standard Deviation = 1.5
- Mean = 4 , Standard Deviation = 2.25
- Mean = 6 , Standard Deviation = 2.25
- Mean = 9 , Standard Deviation = 1.5

**5 points **

QUESTION 15

- What is the probability you will get a question right in this quiz, if I only give you 3 possible answers, one choice is the correct one and you randomly choose an answer?
- 1/3
- 1/2
- 1/4