How to Make a Box and Whisker Plot

Mrs. C explains how to create and interpret a box and whisker plot using data collected from an ice cream parlor survey. She demonstrates organizing data into a five-number summary, constructing the plot, and interpreting the results. The video covers key concepts like quartiles, median, and interquartile range, and discusses data distribution types.

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

• Collecting data

• Drawing a number line

• Finding the mean

• Calculating the range

Which value is NOT part of the five number summary?

• Median

• Minimum

• Maximum

• Mode

How do you find the median in a data set?

• Subtract the smallest number from the largest

• Find the most frequently occurring number

• Eliminate smallest and largest numbers until the middle is found

• Add all numbers and divide by the count

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

• The entire data set

• The range of the data

• The mean of the data

• The interquartile range

What percentage of data is represented by each whisker in a box and whisker plot?

• 25%

• 10%

• 50%

• 75%

If 12 is quartile one and 41 is quartile three, what percentage of data lies between these values?

• 25%

• 50%

• 75%

• 100%

Why might an ice cream shop owner be interested in the age distribution of customers?

• To hire more staff

• To adjust prices

• To choose flavors and toppings

• To change store hours

What does a longer whisker in a box and whisker plot indicate?

• More data points

• A larger spread of data

• A higher median

• A smaller range

What is the interquartile range (IQR)?

• The average of all data points

• The sum of all quartiles

• The difference between quartile three and quartile one

• The difference between the maximum and minimum values

Which term describes a data set that is evenly distributed around the median?

• Skewed left

• Skewed right

• Bimodal

• Symmetrical