Question

The numbers of grams of protein in a random selection of granola and protein bars are listed below. Construct a boxplot for the data.

14     15     11     4     26     10     24
15     12     15     27     8     10     10

Compare your results to a boxplot for the amount of protein found in single servings of various high-protein drinks, as shown below.

18     42     40     40     15     10     15
15     20     21     42     20     34

 

 

Answer 1

MINITAB procedure: 

Step 1: Choose Graph > Boxplot > Boxplot.

Step 2: Under One Y, choose Simple.

Step 3: In Graph Variables, choose the column as Protein Ban.

Step 4: Click OK in all the dialogue boxes.

 

MINITAB output:

 

Hence, there is no outlier presented in the model. But, the right side of the line is greater than the left side which implies that the data has presented in the right skewed.

 

Compute the Box plots.

MINITAB procedure:

Step 1: Choose Graph > Boxplot > Boxplot

Step 2: Under Multiple Y’s, choose Simple

Step 3: In Graph\\r\\nVariables, choose the column as Protein Bars and Protein Drinks.

Step 4: Click OK in all the dialogue boxes.

 

MINITAB output:

 

 

Hence, there is no outlier presented in the model. But, the left side of the line is greater than the left side which implies that the data has presented in the left skewed compared to the Protein Bars.