Dot Plot Analyze

Sal counted the number of songs on each album in his collection. He then created both a dot plot and a box plot to display the same data (both diagrams are shown below).

Which display makes it easier to find that the interquartile range is 4 songs?

• The dot plot

• The box plot

The following dot plots show the ages of two groups of tourists. Make a comparative inference based on the mean values. What is the first step for calculating the mean?

• The first step should be to count the ages that have dots and just average those numbers.

• The first step should be to find the middle number of all the dots.

• The first step should be to count the number of dots for each age.

• The first step should be to average the minimum and maximum values that have dots.

There are two types of plants in a greenhouse. The following dot plots show the heights of 20​ plants, 10 of Type 1 and 10 of Type 2. The plants are given the same amount of food and water and grow at the same rate. What is the mean height for Type 1?

• 41

• 42

• 43

• 44

There are two types of plants in a greenhouse. The following dot plots show the heights of 20​ plants, 10 of Type 1 and 10 of Type 2. The plants are given the same amount of food and water and grow at the same rate. What is the mean height for Type 2?

• 38

• 39

• 40

• 41

There are two types of plants in a greenhouse. The following dot plots show the heights of 20​ plants, 10 of Type 1 and 10 of Type 2. The plants are given the same amount of food and water and grow at the same rate. What is an inference that can be made from the means?

• Type 2 is typically taller.

• Type 1 is typically taller.

• The types are typically the same height.

There are two types of plants in a greenhouse. The following dot plots show the heights of 20​ plants, 10 of Type 1 and 10 of Type 2. The plants are given the same amount of food and water and grow at the same rate. Why you would want to use a dot plot to find the mean instead of a box plot.

• Box plots give you the mean.

• Box plots contain all the data in the data set.

• Dot plots contain all the data in the data set.

• Dot plots give you the mean.

The following dot plots show the ages of two groups of tourists. Make a comparative inference based on the mean values. The mean for group 1 is?

• 41

• 41.5

• 42

• 42.5

The following dot plots show the ages of two groups of tourists. Make a comparative inference based on the mean values. The mean for group 2 is?

• 46.5

• 47

• 47.5

• 48