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Get Full Access to Introductory & Intermediate Algebra For College Students - 4 Edition - Chapter 2 - Problem 2.1.853
Get Full Access to Introductory & Intermediate Algebra For College Students - 4 Edition - Chapter 2 - Problem 2.1.853

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# A student has grades on three examinations of 76, 80, and

ISBN: 9780321758941 177

## Solution for problem 2.1.853 Chapter 2

Introductory & Intermediate Algebra for College Students | 4th Edition

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Problem 2.1.853

A student has grades on three examinations of 76, 80, and 72. What must the student earn on a fourth examination to have an average of at least 80?

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Statistics for Behavioral Sciences EXAM 4 Study Guide Chapters 9 – 11 Chapter 9 – Linear Correlation #1 rule – correlation does not imply causation! Perfect Correlation – if there is a change in variable x, there will be a proportional change in variable y. Correlation is NOT about 2 variables having the exact same value – it’s about 2 variables having the same position/location on the data set. Z scores show location of scores in distribution  so perfectly correlated variables will have the same z scores. Pearson’s Correlation Coefficient (r) – a measurement of linear correlation. r = (+/- 1) when there is a perfect correlation As r approaches 0, there is lack of correlation – more error. Drawing circles, or envelopes, around points o

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