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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 A and Y. (Give your answer correct to 3 significant figures.) 2. Hence, which athlete has a more stable performance?

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 A and Y. (Give your answer correct to 3 significant figures.) 2. Hence, which athlete has a more stable performance?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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1. Find the standard deviations of the heights cleared by athletes X arn-up Practice 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 athletesA and Y. (Give your answer correct to 3 significant figures.) 2. Hence, which athlete has a more stable performance? 308
Transcribed Image Text:1. Find the standard deviations of the heights cleared by athletes X arn-up Practice 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 athletesA and Y. (Give your answer correct to 3 significant figures.) 2. Hence, which athlete has a more stable performance? 308
results of two groups of students taking the same Mathematics test. The following box-and-whisker diagrams show the distribution of the The of two groups of students taking the same Mathematics test. Group A Group A + +. Marks 20 30 40 50 60 70 80 90 100 Paul and Mary are students from group A and group B, respectively. They both got 60 marks in the test. Compare their performance with the students in their own groups. Ir is known that the numbers of students in the two groups are the together, what percentage of the students in the group have marks lower than Paul and Mary's? same. If the marks of the two groups of students are considered
Transcribed Image Text:results of two groups of students taking the same Mathematics test. The following box-and-whisker diagrams show the distribution of the The of two groups of students taking the same Mathematics test. Group A Group A + +. Marks 20 30 40 50 60 70 80 90 100 Paul and Mary are students from group A and group B, respectively. They both got 60 marks in the test. Compare their performance with the students in their own groups. Ir is known that the numbers of students in the two groups are the together, what percentage of the students in the group have marks lower than Paul and Mary's? same. If the marks of the two groups of students are considered
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