Sections 2.1 and 2.2 Problems
Quiz 2.1 – 2.2 tomorrow -May use 1 side of a 4 x 6 note card for the quiz
Percentage of Renters in 77 Cities
Percentage of Renters in 77 Cities What are the cases? What is the variable?
Percentage of Renters in 77 Cities What are the cases? the 77 cities 2. What is the variable?
Percentage of Renters in 77 Cities What are the cases? the 77 cities 2. What is the variable? percentage of renters
Percentage of Renters in 77 Cities 3. What is the shape?
Percentage of Renters in 77 Cities What is the shape? skewed right
Percentage of Renters in 77 Cities 4. What is the center?
Percentage of Renters in 77 Cities
Percentage of Renters in 77 Cities 48
Percentage of Renters in 77 Cities To find the position of median, use:
Percentage of Renters in 77 Cities
Percentage of Renters in 77 Cities 48
Percentage of Renters in 77 Cities Q1 = Q3 =
Percentage of Renters in 77 Cities Q1 = 43 Q3 =
Percentage of Renters in 77 Cities Q1 = 43 Q3 = 55
Page 55, E22
Page 55, E22
Page 55, E22 mean 500
Page 55, E22a mean 500 SD 100
Page 55, E22a mean 500 SD 100 Actual values: 518, 114
Page 55, E22b
Page 55, E22b b. estimate 68% of the SAT I math scores are within one standard deviation of the mean
Page 55, E22c For SAT I critical reading scores, the shape was similar, but the mean was 10 points lower and the standard deviation was 2 points smaller. Actual values for math: 518, 114
Page 55, E22c Actual values: 518, 114
Page 54, E20 Convert the histogram in Display 2.38 into a relative frequency histogram.
Page 54, E20
Page 52, P11 Make the right side for maximum longevity and use a split-stem method.
Page 52, P11
Page 52, P11 The values of average longevity are generally smaller and have a slight skewness toward the larger values. The distribution of maximum longevity is more spread out and is more uniform in shape.
Page 54, E21
Page 54, E21a
Page 54, E21b
Page 54, E21c
Page 54, E21d
Page 54, E21e
Page 55, E23
Page 55, E23a a. We should predict that domesticated mammals generally have greater longevity due to their relative safety and better care.
Page 55, E23b Average Longevities
Page 55, E23c
Page 53, P13
Page 53, P13
Page 53, P13
Questions? Quiz 2.1 – 2.2 tomorrow -May use 1 side of a 4 x 6 note card for the quiz