26-33 please help me:)
the march 2007 issue of consumer reports presents data about airline maintenance. The following table presents the percentage of an airline's maintenance outsourced to other companies and the percentage of the airline's delays caused by the airlines:
airline. outsourced(%). Delays.
Alaska 92. 42
Hawain. 80 70
Us Airways 77 24
Northwest 76 43
AmericanWest 76 39
Continental. 69. 20
jetblue 68 18
southwest 68 20
airtran 66 14
frontier 65 31
united 63 27
delta 48 26
American 46 26
ATA 18 29
a. What are the observational units in this table?
b. Produce and describe a scaterplot of percentage of delays vs. percentage out sourced.
c. is it reasonable to conclude there is a cause and effect relationship between these variables, based on these data? explain
TOI Exercise 26-33: Airline Maintenance Letters CM 16 27 8 outsourced to other companies and the of the airline's delays caused by the airline: Outsourced (%) Airline Alaska Hawaiian US Airways America West The March 2007 issue of Consumer Reports presents data about airline maintenance. The following table presents the percentage of an airline's maintenance 592 Topic 26: Graphical Displays of Association 10 Student Points 7 percentage SN 13 9 BP 12 23 32 10 ZP 10 Delays (%) NP 14 24 42 92 12 DS 2 11 80 70 MSUI) 13 13 21 24 77 14 MS(21 27 76 43 15 CW 19 12 Northwest 76 39 16 GW 15 25 69 20 Continental 68 18 c. Produce a scatterplot of points vs. letters. Does JetBlue the scatterplot reveal a tendency for students 68 20 with longer names to have more Scrabble Southwest AirTran points? Explain. 14 66 d. Identify the two students (by ID number) Frontier 65 31 whose point totals are much larger than expected for the number of letters in their United 63 27 name. Is one of these expected based on the Delta 48 26 student's initials? 46 American the Is it case that every student with a longer 26 name than another student has more Scrabble ATA 18 19 points? If not, identify a pair for which the student with the shorter name has more a. What are the observational units in this tube b. Produce and describe a scatterplot of percentage f. Describe the direction, strength, and form of delays vs. percentage outsourced. of the association between name length and c. Is it reasonable to conclude there is a cause Scrabble points and-effect relationship between these variables, Create a new variable: ratio of points to letters. Produce a dotplot and summary statistics of this variable. Write a paragraph describing the distribution of this ratio variable for these students. h. Produce a scatterplot to examine whether there is a relationship between ratio and number of letters. Then do the same for number of Scrabble points and ratio. Summarize what you find. e. points. as based on these data? Explain. Exercise 26-34: On Your Own Think of an issue of interest to you that concerns the relationship between two quantitative variables. Describe the issue and a research question of your choosing. Also, clearly identify the observational units and the two quantitative variables. TOI Exercise 26-33: Airline Maintenance Letters CM 16 27 8 outsourced to other companies and the of the airline's delays caused by the airline: Outsourced (%) Airline Alaska Hawaiian US Airways America West The March 2007 issue of Consumer Reports presents data about airline maintenance. The following table presents the percentage of an airline's maintenance 592 Topic 26: Graphical Displays of Association 10 Student Points 7 percentage SN 13 9 BP 12 23 32 10 ZP 10 Delays (%) NP 14 24 42 92 12 DS 2 11 80 70 MSUI) 13 13 21 24 77 14 MS(21 27 76 43 15 CW 19 12 Northwest 76 39 16 GW 15 25 69 20 Continental 68 18 c. Produce a scatterplot of points vs. letters. Does JetBlue the scatterplot reveal a tendency for students 68 20 with longer names to have more Scrabble Southwest AirTran points? Explain. 14 66 d. Identify the two students (by ID number) Frontier 65 31 whose point totals are much larger than expected for the number of letters in their United 63 27 name. Is one of these expected based on the Delta 48 26 student's initials? 46 American the Is it case that every student with a longer 26 name than another student has more Scrabble ATA 18 19 points? If not, identify a pair for which the student with the shorter name has more a. What are the observational units in this tube b. Produce and describe a scatterplot of percentage f. Describe the direction, strength, and form of delays vs. percentage outsourced. of the association between name length and c. Is it reasonable to conclude there is a cause Scrabble points and-effect relationship between these variables, Create a new variable: ratio of points to letters. Produce a dotplot and summary statistics of this variable. Write a paragraph describing the distribution of this ratio variable for these students. h. Produce a scatterplot to examine whether there is a relationship between ratio and number of letters. Then do the same for number of Scrabble points and ratio. Summarize what you find. e. points. as based on these data? Explain. Exercise 26-34: On Your Own Think of an issue of interest to you that concerns the relationship between two quantitative variables. Describe the issue and a research question of your choosing. Also, clearly identify the observational units and the two quantitative variables
