Data Analysis and Interpretation

This video tutorial guides students through creating and analyzing dot plots, histograms, and box plots. It begins with organizing a data set and calculating the range. Students learn to plot data on a dot plot, identify the mode, and recognize skewness. The tutorial then covers constructing a box plot using a five-number summary, including finding the median and quartiles. Finally, students create a histogram, analyze data distribution, and confirm the skewness of the data.

What is the first step in organizing a data set?

• Calculating the range

• Sorting the data from least to greatest

• Creating a histogram

• Finding the mean

How many times does the number 20 appear in the given data set?

• Two times

• Three times

• Four times

• Five times

What is the mode of the data set?

• 20

• 19

• 11

• 21

What is the range of the data set?

• 9

• 11

• 10

• 8

What is the median of the data set?

• 15

• 16

• 19

• 20

What is the first quartile (Q1) of the data set?

• 19

• 15.5

• 15

• 16

What is the third quartile (Q3) of the data set?

• 21

• 19

• 22

• 20

What is the purpose of a box plot?

• To find the mean

• To show the frequency of data

• To calculate the range

• To display the five-number summary

How many data values fall in the bucket of 14 to 17 in the histogram?

• One

• Two

• Three

• Four

What does it mean if the data is skewed left?

• The data values are all the same

• The data values are evenly distributed

• The data values are concentrated on the higher end

• The data values are concentrated on the lower end