Module 0.6 Quiz

Use the following data: 33, 40, 12, 25, 80.
What is the mean of the data?

• 68

• 98

• 33

• 38

Use the following data: 33, 40, 12, 25, 80.
What is the median of the data?

• 68

• 98

• 33

• 38

Use the following data: 33, 40, 12, 25, 80.
What is the mode of the data?

• 33

• 12

• 38

• There is no mode.

Which measure of central tendency is most influenced by skewed data or extreme scores in a distribution?

• Mean

• Median

• Mode

• Standard deviation

A researcher calculates statistical significance for her study and finds a 5 percent possibility that the results are due to chance. Which of the following is an accurate interpretation of this finding?

• This result is highly statistically significant.

• This result reflects the minimum standard typically considered statistically significant.

• This result is not statistically significant.

• This result cannot be evaluated on statistical significance without replication of the study.

Descriptive statistics _______, while inferential statistics__________.

• indicate the significance of the data; summarize the data

• describe data from experiments; describe data from surveys and case studies

• are measures of central tendency; are measures of variance

• determine if data can be generalized to other populations; summarize data

• summarize data; determine if data can be generalized to other populations

In a normal distribution, what percentage of the scores in the distribution falls within one standard deviation on either side of the mean?

• 35

• 50

• 68

• 95

Students in a psychology class completed a survey about how many hours they spent studying for their last exam. Here are the descriptive statistics obtained from the study:

Mean = 8.29

Median = 8

Mode = 9

Range = 19

Standard deviation = 5.76

Interpret the meaning of each of these values.