3.4

5

The z-score for the 34 week gestation period baby is -.3

The z-score for the 40 week gestation period baby is -.43

The baby that weighs less relative to the gestation period is the 40 week gestation baby

7

A 75-inch man is relatively taller

9

The player that had a better year relative to his peers was Felix Hernandez because his ERA was 2.14 standard deviations below the American League’s average ERA, whereas Josh Johnson’s was 1.78 standard deviations below the National League’s average

11

The person with the more convincing victory was Will Power becuase he was 1.76 standard deviations below the average, whereas Dario Franchitti was 1.48 standard deviations below the average.

13

The minimum score that an applicant must make on the test to be accepted is 239

15

  1. 15% of males 3 to 5 months of age have a head circumference that is equal to or less that 41.0 cm, and 85% have a head circumference that is greater than 41.0 cm

  2. 90% of females that are 2 years old have a waist circumference equal to or less than 52.7 cm, and 10% have a waist circumference greater than 52.7 cm

  3. This means that the heights at each percentile decreases as age increases, meaning that men get taller with age.

22

  1. Z-score = -1.21

  2. Q1 = 9.15, Q2 = 9.95, Q3 = 11.1

  3. IQR = 1.95. It is skewed left.

  4. The lower fence is 6.225 and the upper fence is 14.025. The outlier is 5.7

25

The cutoff point is about 578 minutes

3.5

3

It is skewed right. The minimum is 0. Q1 is about 1. Q2 is about 3. Q3 is about 6. The maximum is 16

4

It is symmetrical. The minimum is about -.1. Q1 is about 2. Q2 is 5. Q3 is about 8. The maximum is about 11

5

  1. 40

  2. 52

  3. Y because as shown by the box plot, the numbers are more spread out than x

  4. Variable x is symmetrical because the distance between Q1-Q2 and Q2-Q3 is the same.

  5. Variable y is skewed right because the distance between Q1-Q2 is less than the distance between Q2-Q3

6

  1. 15

  2. 22

  3. Variable y becuase as shown by the box plot, the numbers are more spread out than x

  4. Yes, the outlier is 30

  5. It is skewed left because the distance between Q1-Q2 is greater than the distance between Q2-Q3.

7

my_data<-c(60, 68, 77, 89, 98)
boxplot(my_data, horizontal = T)

8

my_data<-c(110, 140, 157, 173, 205)
boxplot(my_data, horizontal = T)

9

  1. The minimum is 42, Q1 is 50.5, Q2 is 54.5, Q2 is 57.5, and the maximum is 69.

my_data<-c(42, 50.5, 54.5, 57.5, 69)
boxplot(my_data, horizontal = T)

  1. It is symmetrical, but it has an outlier.

10

  1. The minimum is 7.2, Q1 is 8.9, Q2 is 10.0, Q3 is 11.25, and the maximum is 16.4

my_data<-c(7.2, 8.9, 10.0, 11.25, 16.4)
boxplot(my_data, horizontal = T)

  1. Skewed right with an outlier