# Question: A column in this data file gives the engine displacement

A column in this data file gives the engine displacement in liters of 509 vehicles sold in the United States. These vehicles are 2012 models, are not hybrids, have automatic transmissions, and lack turbochargers.

(a) Produce a histogram of the engine displacements, with the interval widths set to 1/2 liter and the first bin starting at 1.25 liter. Describe and interpret the histogram.

(b) Repeat (a), but with the width of the intervals set to 1 liter and the smallest interval beginning at 1 liter.

(c) Does the size of the interval width change your impression of the distribution? Explain briefly.

(d) Find the mean and standard deviation of the engine displacements. How are these related to the histogram?

(e) Find the coefficient of variation and briefly interpret its value.

(f) Identify any unusual values (outliers). What would it mean to be an outlier?

(a) Produce a histogram of the engine displacements, with the interval widths set to 1/2 liter and the first bin starting at 1.25 liter. Describe and interpret the histogram.

(b) Repeat (a), but with the width of the intervals set to 1 liter and the smallest interval beginning at 1 liter.

(c) Does the size of the interval width change your impression of the distribution? Explain briefly.

(d) Find the mean and standard deviation of the engine displacements. How are these related to the histogram?

(e) Find the coefficient of variation and briefly interpret its value.

(f) Identify any unusual values (outliers). What would it mean to be an outlier?

**View Solution:**## Answer to relevant Questions

Another column in this data file cars gives the rated combined fuel economy (in miles per gallon) for 509 vehicles sold in the United States (see prior question). (a) Produce a histogram of these data. Describe and interpret ...These data give the monthly returns on stocks in three technology companies: Dell, IBM, and Microsoft. For each month from January 1990 through the end of 2005 (192 months), the data give the return earned by owning a share ...1. We can fill in the cells of the contingency table from the marginal counts if the two categorical variables are not associated. 2. We can see association between two categorical variables by comparing their bar charts. 3. ...The following table compares market shares of several companies in the computer industry as reported by Gartner, an industry monitor. The table gives the number of computer systems shipped during each quarter, in ...The contingency table in Exercise 39 shows counts of the types of gasoline bought during the week and during weekends. (a) Find the value of chi-squared and Cramerâ€™s V for this table. (b) Interpret these values. What do ...Post your question