FREE AST Data Analysis Questions and Answers

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What is the median of the following data set: 12, 15, 18, 20, 22?

Correct! Wrong!

The median is the middle value of an ordered data set. Since the data is already ordered, the middle value is 18.

A graph shows monthly sales figures for a year. Which of the following is NOT a valid conclusion you can draw?

Correct! Wrong!

Conclusions about future trends cannot be drawn solely from past data unless additional context is provided.

If a bar graph shows a category with zero frequency, what does this indicate?

Correct! Wrong!

A zero frequency means no data points were recorded for that category.

A survey showed 40% of respondents prefer brand A, 35% prefer brand B, and 25% prefer brand C. If there were 200 respondents, how many preferred brand B?

Correct! Wrong!

To find the number of respondents preferring brand B, calculate
200×0.35=70.

Which type of graph is best suited for showing the proportion of different categories in a data set?

Correct! Wrong!

Pie charts are effective for displaying proportions and percentages of a whole.

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