Do the 2b parts of the question only thanks La Suppose the midterm grades for 10 students are the following: 70, 65, 75, 80,63, 90, 71, 75, 93, 83. Treat these data as sample data. Using R, show what happens tothe variance of the grades if each of the following happens. Attach R code.(a) The teacher added 5 marks to everyone's grades.(b) The teacher subtracted 5 marks from everyone's grades.(c) The teacher multiplied everyone's grades by 5.(d) The teacher divided everyone's grades by 5.26What happens to the variance of a set of scores if(a) A constant a is added to each score in the set?(b) A constant a is subtracted from each score in the set?(c) Each score is multiplied by a constant a?(d) Each score is divided by a constant a?

(a) Variance measures how far the data values are from the mean. One of the property of the variance…

2b What happens to the variance of a set of scores if (a) A constant a is added to each score in the set? (b) A constant a is subtracted from each score in the set? (c) Each score is multiplied by a constant a? (d) Each score is divided by a constant a?

2b What happens to the variance of a set of scores if (a) A constant a is added to each score in the set? (b) A constant a is subtracted from each score in the set? (c) Each score is multiplied by a constant a? (d) Each score is divided by a constant a?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 26PFA

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Question

Do the 2b parts of the question only

thanks

La Suppose the midterm grades for 10 students are the following: 70, 65, 75, 80,
63, 90, 71, 75, 93, 83. Treat these data as sample data. Using R, show what happens to
the variance of the grades if each of the following happens. Attach R code.
(a) The teacher added 5 marks to everyone's grades.
(b) The teacher subtracted 5 marks from everyone's grades.
(c) The teacher multiplied everyone's grades by 5.
(d) The teacher divided everyone's grades by 5.
26
What happens to the variance of a set of scores if
(a) A constant a is added to each score in the set?
(b) A constant a is subtracted from each score in the set?
(c) Each score is multiplied by a constant a?
(d) Each score is divided by a constant a?

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