A. 56.73 B. 75.63 C. 73.56 D. 76.05 2. Calculate the variance for the distribution given in Figure 1. A. 429.84 B. 492.98 C. 924.86 D. 942.99 3. Calculate the standard deviation and the co-efficient of variation respectively for the distribution given in Figure 1. A. 73.20, 28.20 B. 20.73, 0.28 C. 27.30,20.28 D. 0.28, 0.21 4. The mean of a set of eight numbers is 10. If one of the numbers is removed the mean of the remaining numbers is 9. The number that was removed is: A. 16 B. 17 C. 15 D. 18

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Choose the most appropriate answer. Write down the letter that represents the correct answer next
to each number in your online answer booklet. E.g. 26 B
1. You are given a Grouped Frequency Distribution Table of the speed in miles per hour (mph) attained
by each observed Formula One driver from zero (0) to seven (7) seconds, during the first practice
session in preparation for the Abu Dhabi Grand Prix of 2022 as shown in Figure 1 below:
Interval
30<48
48 < 66
66<84
84 <102
102 <120
TOTALS
A. 56.73
B. 75.63
C. 73.56
D. 76.05
Frequency
[f]
3
6
A. 429.84
B. 492.98
C. 924.86
D. 942.99
8
6
2
A. 73.20, 28.20
B. 20.73, 0.28
C. 27.30, 20.28
D. 0.28, 0.21
Cumulative
Frequency
3
A. 16
B. 17
C. 15
D. 18
9
17
23
25
Midpoint
[X]
39
2. Calculate the variance for the distribution given in Figure 1.
57
75
93
111
X²
1521
3249
5625
8649
fX
117
342
Figure 1
Calculate the mean speed in miles per hour attained between zero (0) and seven (7) for this distribution.
600
558
12321
222
31365 1839
fX²
4563
19494
45000
51894
24642
145593
3. Calculate the standard deviation and the co-efficient of variation respectively for the distribution given in
Figure 1.
4. The mean of a set of eight numbers is 10. If one of the numbers is removed the mean of the remaining
numbers is 9. The number that was removed is:
Transcribed Image Text:Choose the most appropriate answer. Write down the letter that represents the correct answer next to each number in your online answer booklet. E.g. 26 B 1. You are given a Grouped Frequency Distribution Table of the speed in miles per hour (mph) attained by each observed Formula One driver from zero (0) to seven (7) seconds, during the first practice session in preparation for the Abu Dhabi Grand Prix of 2022 as shown in Figure 1 below: Interval 30<48 48 < 66 66<84 84 <102 102 <120 TOTALS A. 56.73 B. 75.63 C. 73.56 D. 76.05 Frequency [f] 3 6 A. 429.84 B. 492.98 C. 924.86 D. 942.99 8 6 2 A. 73.20, 28.20 B. 20.73, 0.28 C. 27.30, 20.28 D. 0.28, 0.21 Cumulative Frequency 3 A. 16 B. 17 C. 15 D. 18 9 17 23 25 Midpoint [X] 39 2. Calculate the variance for the distribution given in Figure 1. 57 75 93 111 X² 1521 3249 5625 8649 fX 117 342 Figure 1 Calculate the mean speed in miles per hour attained between zero (0) and seven (7) for this distribution. 600 558 12321 222 31365 1839 fX² 4563 19494 45000 51894 24642 145593 3. Calculate the standard deviation and the co-efficient of variation respectively for the distribution given in Figure 1. 4. The mean of a set of eight numbers is 10. If one of the numbers is removed the mean of the remaining numbers is 9. The number that was removed is:
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