1. The Journal of Travel conducted research by taking two large groups? (viewed as? populations) to determine whether there are differences in the characteristics of the two groups of holiday? travellers:

?[Group A] travellers that are less than 50 years old.

?[Group B] travellers that are 50 or more years old.

One item of interest was the amount spent for a? one-day trip. The results are shown below.

Cost of? one-day trip	Group? A: Under 50 years old? (n=480)	Group? B: Over 50 years old? (n=325)
?$0 up to 50	6? %	?1%
50 up to 100	13	5
100 up to 200	21	9
200 up to 300	29	13
300 up to 400	11	20
400 up to 500	12	17
500 up to 750	2	14
750 up to 1000	3	10
1000 up to 2000	2	7
2000 up to 3000	1	4

Part 1

?A) The mean cost of a? one-day trip for Group A is

?$__enter your response here and for Group B ?$enter your response here.

The standard deviation of the cost of a? one-day trip for Group A is? (rounded to nearest? cent)????

?$enter your response here?? and for Group B ?$enter your response here.

?b) For which set of travelers would the median be a better measure of central tendency than the? mean?

A.All travellers

B.Over 50 Group B

C.Neither group

D.Under 50 Group A

?C) For Group? A, 384 of those surveyed would have spent less than

A.?$300

B.$500

C.?$750

D. ?$400

?d) The coefficient of variation for Group A is enter your response here and for Group B is enter your response here.

Group B is relatively more variable than Group A

2. Using the data on the? right, find the average sales of the toy store chains? (in $1000)?

Chain	?# of Stores	Avg.? Sales/Store ?($ 000)
Toys? 'R' Us	149	7,236
Child World	78	3,588
Kaybee	361	509
Lionel	55	3,233

a. The overall average sales per store is. ?$enter your response here.

?(rounded to the nearest whole? number.)

b. The median of sales? is:?? $enter your response here.

c. The overall average sales per chain is? (rounded to the nearest? integer) is ? $enter your response here.

3. The Journal of Travel conducted research by taking two large groups? (viewed as? populations) to determine whether there are differences in the characteristics of the two groups of holiday? travellers:

?[Group A] travellers that are less than 50 years old.

[Group B] travellers that are 50 or more years old.

One item of interest was the amount spent for a? one-day trip. The results are shown below.

Cost of? one-day trip	Group? A: Under 50 years old? (n=480)	Group? B: Over 50 years old? (n=325)
?$0 up to 50	6? %	?1%
50 up to 100	13	5
100 up to 200	21	9
200 up to 300	29	13
300 up to 400	11	20
400 up to 500	12	17
500 up to 750	2	14
750 up to 1000	3	10
1000 up to 2000	2	7
2000 up to 3000	1	4

Part 1

?a) The mean cost of a? one-day trip for Group A is ?$enter your response here and for Group B ?$enter your response here.

The standard deviation of the cost of a? one-day trip for Group A is? (rounded to nearest? cent)????

?$enter your response here and for Group B ?$enter your response here.

?b) For which set of travelers would the median be a better measure of central tendency than the? mean?

A. All travellers

B. Over 50 Group B

C. Neither group

D. Under 50 Group A

?c) For Group? A, 384 of those surveyed would have spent less than

A.$300

B.?$500

C. ?$750

D. ?$400

?d) The coefficient of variation for Group A is enter your response here and for Group B is enter your response here.

Group B is relatively more variable than Group A

a. True

b. False

4.

The following data refers to the OAC average grades of students being accepted into first year of several Ontario universities. Grade Distribution of New 1st Year Students University 60 - 70 70 - 75 75 - 80 80 - 85 85 - 90 2 90 Brock 5.8 22.1 26.7 26.0 13.1 6.3 Guelph 0 0.2 27.6 37.9 21.4 12.9 McMaster 0.1 10.5 24.2 32.4 19.7 13.1 Queen's 0 0.2 3.2 21.9 36.8 37.9 Ryerson 0.5 23.0 31.0 29.3 12.4 3.8 Toronto 0 1.2 8.9 26.0 36.6 27.32003 1/1 8/3 31/3 1/6 1/7 2/9 9/10 2/12 21/12 Room Rates - 7/3 - 30/3 - 31/5 -30/6 -1/9 -8/10 -1/12 -20/12 - 31/12 A Oceanfront 1 double bed 75 125 85 100 150 95 85 75 125 B Oceanfront 2 double beds 85 135 95 110 160 105 95 85 135 C Oceanfront Effic. 2 double beds 105 155 115 130 180 125 115 105 155 D 2 room suite 120 3 double beds 175 130 150 200 140 130 120 175 E Oceanfront Suite 140 3 double beds 200 150 175 225 165 150 140 200 Extra Person 5 8 5 5 10 7 5 5 10