Understanding Box and Whisker Plots

What is the primary purpose of a box and whisker plot?

• To calculate the average score

• To determine the total number of data points

• To display data distribution visually

• To list data in numerical order

Which value represents the middle score in a data set?

• Lower quartile

• Upper quartile

• Median

• Maximum

What does the lower quartile in a box and whisker plot represent?

• The median of the lower half of the data

• The highest value

• The lowest value

• The median of the upper half of the data

Which quartile is used to start the box in a box and whisker plot?

• Upper quartile

• Median

• Lower quartile

• Minimum

How is the median calculated when the data set has an even number of scores?

• By multiplying the two middle scores

• By selecting the highest score

• By selecting the lowest score

• By averaging the two middle scores

What does the whisker in a box and whisker plot represent?

• The average of all data points

• The range of the middle 50% of data

• The total number of data points

• The connection from minimum to maximum

What does the range of a data set represent?

• The middle 50% of scores

• The difference between the highest and lowest scores

• The average score

• The total number of scores

What is the Interquartile Range (IQR) in a box and whisker plot?

• The range between the median and the minimum

• The total range of the data

• The range between the maximum and the median

• The range of the middle 50% of the data

What percentage of students scored 60% or higher according to the plot?

• 25%

• 50%

• 75%

• 100%

If the median score is 70, what can be inferred about the class performance?

• More than 70% of students scored below 70

• Less than 70% of students scored above 70

• 50% of students scored below 70

• 70% of students scored above 70