Box-and-Whisker Plot Concepts

The video tutorial explains how to create a box-and-whiskers plot by ordering data, finding the median, and calculating quartiles while excluding the median. It emphasizes the importance of practice and provides a step-by-step guide to understanding the range, median, and quartiles of a data set.

What is the first step in creating a box-and-whisker plot?

• Calculating the mean

• Ordering the data

• Finding the median

• Identifying outliers

What do the whiskers in a box-and-whisker plot represent?

• The range of the data

• The quartiles

• The median

• The mean

What is the range of the data set: 7, 8, 8, 8, 9, 9, 10, 11, 12, 13?

• 8

• 7

• 6

• 5

How do you find the median in a data set with an odd number of values?

• Choose the largest number

• Choose the smallest number

• Select the middle number

• Average the two middle numbers

When calculating quartiles, what should you do with the median?

• Include it in both halves

• Exclude it from calculations

• Ignore the smallest number

• Double its value

What is the median of the lower half of the data set: 7, 8, 8, 8, 9?

• 7

• 8

• 9

• 10

What is the median of the upper half of the data set: 9, 10, 11, 12, 13?

• 12

• 9

• 11

• 10

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

• To highlight outliers

• To display the distribution of data

• To show the mean of the data

• To calculate the sum of data

Which number represents the upper quartile in the data set: 9, 10, 11, 12, 13?

• 12

• 11

• 10

• 9

In a box-and-whisker plot, what does the box represent?

• The entire data set

• The mean

• The outliers

• The interquartile range