Create a Box Plot

The video tutorial explains how to create a box plot, a graphical representation of data distribution. It covers the steps to arrange data, identify the lower and upper extremes, find the median, and calculate the lower and upper quartiles. The tutorial also guides on plotting these points on a number line and constructing the box plot by drawing a box and whiskers. The box plot provides a simple summary of data, highlighting the interquartile range and data spread.

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

In a data set, what does the lower extreme represent?

• The average value

• The smallest value

• The largest value

• The middle value

How can you find the median of a data set?

• By adding all numbers and dividing by the count

• By identifying the smallest number

• By crossing off numbers from each end until one remains

• By finding the average of the first and last numbers

What is the lower quartile in a data set?

• The median of the entire data set

• The largest value in the data set

• The smallest value in the data set

• The median of the lower half of the data set

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

• Find the average of the two numbers

• Choose the larger number

• Choose the smaller number

• Subtract the smaller number from the larger number

What does the interquartile range represent in a box plot?

• The average of all data points

• The difference between the largest and smallest values

• The middle portion of the data

• The range of the entire data set

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

• To display the average

• To show the median

• To indicate the interquartile range

• To extend from the quartiles to the extremes