From the data given below, find the number of items: r = 0.5 Exy = 120 Ex2 = 90 Qy = 8 (where x and y are deviations from arithmetic average).

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 6CR
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From the data given below, find the
number of items:
r = 0.5
Exy = 120
%3D
Ex² = 90
%3D
Qy = 8
(where x and y are deviations from
arithmetic average).
Transcribed Image Text:From the data given below, find the number of items: r = 0.5 Exy = 120 %3D Ex² = 90 %3D Qy = 8 (where x and y are deviations from arithmetic average).
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