Options

A qqnorm(fdims che.de) qqline(fdims che.de)

B qqnorm(fdims bii.di) qqline(fdims bii.di)

C qqnorm(fdims elb.di) qqline(fdims elb.di)

D qqnorm(fdims age) qqline(fdims age)

Question 1

The histogram for female biiliac (pelvic) diameter ( bii.di ) belongs to normal probability plot letter ____.

Answer

The answer is B. Please find the validation below:

hist(fdims$bii.di)

qqnorm(fdims$bii.di)

Question 2

The histogram for female elbow diameter ( elb.di ) belongs to normal probability plot letter ____.

Answer

The answer is C. Please find the validation below:

hist(fdims$elb.di)

qqnorm(fdims$elb.di)

Question 3

The histogram for general age ( age ) belongs to normal probability plot letter ____.

Answer

The answer is D. Please find the validation below:

hist(fdims$age)

qqnorm(fdims$age)

Question 4

The histogram for female chest depth ( che.de ) belongs to normal probability plot letter ____.

Answer

The answer is A. Please find the validation below:

hist(fdims$che.de)

qqnorm(fdims$che.de)

Question 5

Note that normal probability plots C and D have a slight stepwise pattern. Why do you think this is the case?

Answer

Because there are discrete values in the data.

Question 6

As you can see, normal probability plots can be used both to assess normality and visualize skewness.

Make a normal probability plot for female knee diameter ( kne.di ). Based on this normal probability plot, is this variable left skewed, symmetric, or right skewed? Use a histogram to confirm your findings.

Answer

hist(fdims$kne.di)

qqnorm(fdims$kne.di)

As per the above histogram, we can conclude that Female Knee Diameter is right skewed.