BUSI 230 HW 2.2 Freqeuncy Distributions and Their Graphs Assignment solutions complete answers

BUSI 230 HW 2.2 Freqeuncy Distributions and Their Graphs Assignment solutions complete answers 

 

Just put your values given and automatically provide answers for you!

 

Select the appropriate word or phrase to complete each sentence.

 

When the right half of a histogram is a mirror image of the left half, the histogram is .

 

A histogram is skewed to the  if its left tail is longer than its right tail.

 

A histogram is  if it has two clearly distinct modes.

 

The  of a category is the number of times it appears in the data set.

 

Classify the histogram as skewed to the left, skewed to the right, bell-shaped, or approximately uniform.

 

Classify the histogram as unimodal or bimodal.

 

Movies: A sample of people were asked how many movies they had seen in a movie theater during the past month. Following is a frequency histogram of their responses.

 

(a)What is the most frequent number of movies seen?

 

The most frequent number of movies seen is .

 

There were  people in the sample.

 

The number of people who saw no fewer than three movies is .

 

Approximately  saw fewer than three movies. Round your answer to the nearest whole number.

 

The following frequency histogram presents the final grades of a random sample of 100 college students.

 

(a) How many classes are there?

 

(b) What is the class width?

 

(c) Which class has the highest frequency?

 

(d) What percentage of students got a final grade higher than 70?

 

The following histogram shows the distribution of systolic blood pressure (in millimeters) for a sample of women. Use the histogram to answer the following questions.

 

The percentage of women with blood pressures above 130 is closest to .

 

In which interval are there more women: 130-135 or 140-150?

 

BMW prices: The following table presents the manufacturer's suggested retail price (in $1000s) for base models and styles of BMW automobiles.

 

(a) Construct a frequency distribution using a class width of 15, and using 30.0 as the lower class limit for the first class.

 

(b) Construct a frequency histogram from the frequency distribution in part (a).

 

(c) Is the histogram unimodal or bimodal?

 

Geysers: The geyser Old Faithful in Yellowstone National Park alternates periods of eruption, which typically last from 1.5 to 4 minutes, with periods of dormancy, which are considerably longer. The following table presents the durations, in minutes, of 30 dormancy periods that occurred during a recent year.

 

(a) Construct a frequency distribution using a class width of 7, and using 55 as the lower class limit for the first class.

 

(b) Construct a frequency histogram from the frequency distribution in part (a).

 

(c) Is the histogram skewed to the left, to the right, or approximately symmetric?

 

The following frequency distribution presents the batting averages of professional baseball players who had 300 or more plate appearances during the 2012 season.

 

(a) Find the midpoints for the classes. Round the answers to three decimal places.

 

Construct a frequency polygon for the frequency distribution.

 

Frequency polygon: The following frequency distribution presents the number of murders (including negligent manslaughter) per 100,000 population for each U.S. city with population over 250,000 in a recent year.

 

(a) Find the midpoints for the classes.

 

(b) Construct a frequency polygon for the frequency distribution.

 

Ogive: The following frequency distribution presents the batting averages of Major League Baseball players who had 300 or more plate appearances during a recent season.

 

The following frequency distribution presents the number of murders (including negligent manslaughter) per 100,000 population for each U.S. city with population over 250,000 in a certain year.