Create a Box Plot

The video tutorial explains how to create a box plot, a graphical representation of data distribution. It covers identifying key data points such as the lower and upper extremes, median, and quartiles. The tutorial guides viewers through plotting these points on a number line and constructing the box plot, including drawing the box and whiskers. It also explains the interquartile range and how the box plot summarizes data distribution effectively.

What is the first step in constructing a box plot?

• Identify the median

• Arrange the data from least to greatest

• Find the interquartile range

• Plot the data on a number line

Which value represents the smallest number in a data set?

• Upper extreme

• Lower extreme

• Median

• Upper quartile

How do you find the median in a data set?

• Calculate the interquartile range

• Find the average of the lower and upper extremes

• Identify the middle number in an ordered set

• Add all numbers and divide by the count

What is the lower quartile in a data set?

• The median of the lower half of the data set

• The smallest value in the data set

• The largest value in the data set

• The average of the entire data set

How do you calculate the upper quartile when there are two numbers?

• Find the average of the two numbers

• Select the larger of the two numbers

• Add the two numbers without dividing

• Select the smaller of the two numbers

What does the interquartile range represent in a box plot?

• The sum of the lower and upper quartiles

• The difference between the median and the lower extreme

• The middle portion of the data

• The total range of the data set

What is the purpose of the whiskers in a box plot?

• To extend from the quartiles to the extremes

• To represent the average of the data set

• To indicate the median

• To show the interquartile range