Creating and Interpreting Box Plots

This video tutorial explains how to use and create box plots, also known as box and whisker plots, to display data distribution. It covers the identification of key values such as the least, greatest, median, lower quartile, and upper quartile. An example using the number of pets owned by students is provided to illustrate the process. The tutorial also discusses how to calculate medians and quartiles, and concludes with a brief introduction to finding the interquartile range.

What is another name for a box plot?

• Histogram

• Pie chart

• Bar graph

• Box and whisker plot

What does the line segment connecting the lowest value to the lower quartile represent?

• Lower whisker

• Box line

• Upper whisker

• Median line

How many students were surveyed about their pets for the box plot example?

• Nine

• Eight

• Ten

• Seven

What is the median number of pets owned as per the data?

• Five

• Three

• Four

• Two

What value does the upper quartile represent in the box plot?

• The highest value in the data set

• The average of all data points

• The median of the lower half of the data

• The median of the upper half of the data

What is the lower quartile value in the example?

• One

• Zero

• Two

• Three

How is the median found when there is an even number of data values?

• By averaging the two middle numbers

• By multiplying the two middle numbers

• By selecting the lowest middle number

• By selecting the highest middle number

What does the right whisker in a box plot connect?

• The lowest value to the lower quartile

• The median to the upper quartile

• The upper quartile to the greatest value

• The lower quartile to the median

What is the significance of the median in a box plot?

• It shows the average value of the dataset

• It divides the box into two equal parts

• It represents the total spread of the data

• It indicates the middle value of the dataset

What is the purpose of the interquartile range in a box plot?

• To measure the spread of the middle half of the data

• To show the total range of the data

• To indicate the average value of the data

• To connect the whiskers of the plot