Which of the following best describes the median of a data set?

• The middle value when data is arranged in order
• The highest value in the data
• The sum of all data divided by the number of data points
• The most common value in the data

A histogram is a type of graph that displays the frequency of data within certain intervals.

If the set of marks obtained by five students are: 70, 80, 75, 90, 85, what is the mode?

• No mode

Which measure of central tendency is most affected by outliers?

• Mean
• Median
• Mode
• Range

The probability of flipping a fair coin and getting heads is 0.5.

What is the range of the data set: 3, 7, 10, 15, 18? (Hint: Subtract the smallest value from the largest value.)

• 15

Which of the following is NOT a type of chart or graph used in statistics?

• Pie chart
• Bar graph
• Tree diagram
• Line graph

If a data set is skewed to the right, its mean is likely to be greater than its median.

What do you call a sudden, unusual, or exceptional value in a data set that is much larger or smaller than the rest?

• Outlier

Which of the following is a measure of dispersion?

• Mean
• Variance
• Median
• Mode