Reading 3.4; #5-15odds, 22, 25

5 -.30; -.43; 40-week gestation period

7 Man

9 Hernandez

11 Will Power

13 239

15

  1. Within males between 3-5 months of age, 15% have a head circumference less than or equal to 41.0cm.
  2. Within females who are 2 years of age, 90% of them have a waist circumference less than or equal to 52.7cm.
  3. The heights at each percentile decrease as the age increases.

22

  1. -1.21; which means that the hemoglobin of Blackie is -1.21 below the mean.
  2. The quartiles are Q1 = 9.15, Q2 = 9.95, Q3 = 11.1
  3. 11.1-9.15 = 1.95 is the IQR, which is the middle 50% of the data.

25 574.25 is the cutoff point.

Reading 3.5; 3-10

3

  1. skewed right
  2. 0, 1, 3, 6, 16

4

  1. symmetrical
  2. -1, 2, 5, 8, 11

5

  1. 40
  2. 52
  3. y, because it has a larger IQR.
  4. Symmetric, because there are equal distances Q1 and the median, Q3 and the median.default(
  5. Skewed right, because the upper half of the box is longer than the lower half of the bBox.test(

6

  1. 16
  2. 22
  3. y, because it has a larger IQR
  4. Yes, the outlier is 30 because there is an asterix.
  5. Skewed left, because the lower half of the box is longer than the upper half of the bBox.test(

7

your_data <- c(60, 63, 68, 68, 68, 75, 75, 77, 79, 89, 89, 89, 93, 94, 98)

boxplot(your_data, horizontal = T)

fivenum(your_data)

8

this_data <- c(110, 125, 140, 140,140, 150, 152, 157, 160, 173, 173, 173, 180, 180, 205)

boxplot(this_data, horizontal = T)

fivenum(this_data)

9

my_data <- c(42, 43, 46, 46, 47, 47, 48, 49, 49, 50, 50, 51, 51, 51, 51, 52, 52, 54, 54, 54, 54, 54, 55, 55, 55, 55, 56, 56, 56, 57, 57, 57, 57, 58, 60, 61, 61, 61, 62, 64, 64, 65, 68, 69)

fivenum(my_data)

boxplot(my_data, horizontal = T)

quantile(my_data)

c It is skewed left because the lower half of the box is longer than the upper half of the Box.test(

10

our_data <- c(7.2, 7.8, 7.8, 7.9, 8.1, 8.3, 8.5, 8.6, 8.6, 8.6, 8.7, 8.8, 9.0, 9.1, 9.2, 9.2, 9.2, 9.4, 9.4, 9.6, 9.7, 9.7, 9.9, 9.9, 10.0, 10.0, 10.0, 10.1, 10.2,10.3, 10.3, 10.3, 10.3, 10.7, 10.7, 10.9, 11.2, 11.2, 11.2, 11.3, 11.3, 11.3, 11.5, 11.5, 11.7, 12.4, 12.5, 13.6, 13.8, 14.4, 16.4)

fivenum(our_data)

boxplot(our_data, horizontal = T)

c It is skewed right because the upper half of the box is longer than the lower half of the box.