Statistics Review

What is the primary purpose of statistics in social studies?

• To collect data

• To interpret data

• To organize data

• To analyze data

Which of the following is a common method for collecting statistical data in social studies?

• Surveys

• Experiments

• Observations

• Interviews

What does a high standard deviation indicate in a social study?

• Data points are close to the mean

• Data points are spread out over a large range

• Data points are identical

• Data points are skewed

Which measure of central tendency is most affected by extreme values?

• Mean

• Median

• Mode

• Range

What is the median of the following data set: 3, 7, 9, 15, 21?

• 7

• 9

• 15

• 21

In a normal distribution, what percentage of data falls within one standard deviation of the mean?

• 50%

• 68%

• 95%

• 99%

What is the main difference between qualitative and quantitative data?

• Qualitative data is numerical

• Quantitative data is descriptive

• Qualitative data is descriptive

• Quantitative data is subjective

Which of the following is an example of a qualitative variable?

• Height

• Weight

• Gender

• Age

What is the purpose of a histogram in statistics?

• To show the relationship between variables

• To display the distribution of data

• To compare different data sets

• To calculate the mean

Which statistical test would you use to compare the means of two independent groups?

• Chi-square test

• T-test

• ANOVA

• Regression analysis