Solve each problem. 1. The following table shows the scores of 45 students in a quiz. 5. 3 Score 1. 12 2. 3 4. 5. Frequency 5. 15

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= 0.352 kg (correct to 3 significant figures)
b. Since the weight of the Deli rice has a smaller standard deviation
is more uniform in weight.
A.
Wann ap Pronhhn
The heights cleared by two athletes in a high jump event are recorded
bellowed.
Athlete X: 1.86 m, 1.75 m, 2:10 m, 1.94 m
Athlete Y 2.10 m, 1.85 m, 1.80 m, 1.95 m
1. Find the standard deviations of the heights cleared by athletes X
and Y. (Give your answer correct to 3 significant figures.)
2. Hence, which athlere has a more stable performance?
Transcribed Image Text:= 0.352 kg (correct to 3 significant figures) b. Since the weight of the Deli rice has a smaller standard deviation is more uniform in weight. A. Wann ap Pronhhn The heights cleared by two athletes in a high jump event are recorded bellowed. Athlete X: 1.86 m, 1.75 m, 2:10 m, 1.94 m Athlete Y 2.10 m, 1.85 m, 1.80 m, 1.95 m 1. Find the standard deviations of the heights cleared by athletes X and Y. (Give your answer correct to 3 significant figures.) 2. Hence, which athlere has a more stable performance?
Solve each problem.
1. The following table shows the scores of 45 students in a quiz.
Score
1.
12
2.
15
Frequency
5.
3.
3.
4.
5.
Determine the variance and standard deviation for this distribution.
5.
5.
2. The following table shows the times taken by 30 workers to commute
to work.
Time (minutes)
11-15
16-20
21-25
26-30
31-35
12
8.
2.
5.
3.
Calculate the variance and standard deviation for the time taken by
the workers.
60
Transcribed Image Text:Solve each problem. 1. The following table shows the scores of 45 students in a quiz. Score 1. 12 2. 15 Frequency 5. 3. 3. 4. 5. Determine the variance and standard deviation for this distribution. 5. 5. 2. The following table shows the times taken by 30 workers to commute to work. Time (minutes) 11-15 16-20 21-25 26-30 31-35 12 8. 2. 5. 3. Calculate the variance and standard deviation for the time taken by the workers. 60
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