Part 1 of 1 - 40.0 Points
Question 1 of 20
2.0 Points
How are inferential statistics different from descriptive statistics?
A.Descriptive
... [Show More] statistics allow drawing inferences from the sample to a target population.
B.Descriptive statistics verify the accuracy of the inferential statistics.
C.Inferential statistics describe the results of a study.
Correct D.Inferential statistics allow drawing inferences from the sample to a target population.
Answer Key: D
Question 2 of 20
2.0 Points
_____ are characteristics of samples, while _____ are characteristics of populations.
A.Concepts; statistics
B.Parameteres; statistics
Correct C.Statistics; parameters
D.Parameters; estimations
Answer Key: C
Question 3 of 20
2.0 Points
In a normal distribution, what percentage of scores falls between one standard deviation below the mean and one standard deviation above the mean?
A.16%
B.50%
Correct C.68%
D.90%
Answer Key: C
Question 4 of 20
2.0 Points
Here is a set of scores: 5, 3, 7, 3, 6, 2, 5, 3. The median of this set of scores is ______.
A.2
B.3
Correct C.4
D.4.5
Answer Key: C
Question 5 of 20
2.0 Points
Here is a set of scores: 5, 3, 7, 3, 6, 2, 5, 3. Those mode of this set of scores is _____.
A.3
B.4
Incorrect C.4.22
D.4.5
Answer Key: A
Question 6 of 20
2.0 Points
An exam was given to two sections of the same course. In Section 1, the exam mean was 51 and the standard deviation was 7. In Section 2, the exam mean was 51 and the standard deviation was 13. Which of the following conclusions is accurate?
A.Section 1 did better on the exam than Section 2.
B.Section 1 scores were more variable than Section 2.
Correct C.Section 1 scores were less variable than Section 2.
D.Section 1 did less well on the exam than Section 2.
Answer Key: C
Question 7 of 20
2.0 Points
The z score, or standard score, allows the researcher to determine:
Correct A.how far a target individual's score is from the group mean.
B.what percentage of individuals in the sample scored above the target individual.
C.the mean for the population based on the mean for the sample.
D.what percentage of individuals in the sample scored below the target individual [Show Less]