# BUS 210 BUS210 Module 4 Homework Solution (AAU Online)

**PART I: APPLICATION**

1.The following stem and leaf plot shows the scores on a recent test of Pre-Calculus students.

2.In a contingency table, we describe the relationship between two variables measured at the __________ or __________ level.

3.For the following data, find the information required to construct a box plot.

4.For the following data, what is the Interquartile range?

5.Given the sample information in the following table regarding public opinion on gun control, who is more likely to favor gun control?

6.The research director of a large oil company studied the buying habits of consumers with respect to the amount of gasoline purchased at full-service pumps.Â The arithmetic mean amount is 11.5 gallons and the median amount is 11.95 gallons.Â The standard deviation of the sample is 4.5 gallons.Â What is the Pearson's coefficient of skewness?

7.A sample of the homes currently offered for sale revealed that the mean asking price is $75,900, the median $70,100 and the modal price is $67,200. The standard deviation of the distribution is $5,900. What is the Pearson's coefficient of skewness?

8.For the following data, how many observations are in the data?

9.What is the common purpose of a scatter diagram and a contingency table?

10.What is the common purpose of a dot plot and a box plot?

**PART II: CASE STUDY**

1.Using these values, which measure(s) of variability can you compute or determine for these values and why?Â

2.What do they tell us about your data?

3.What would a business decision maker conclude from your statistics and visual display of variability? Â

4.How might he/she use them to address the business issue that you have identified?

**PART III: JOURNAL ACTIVITY**