Colby graphed a scatter plot of student exam scores (y) and the number of hours each student had slept the night before the exam (x). She drew the trend line and calculated its equation to be y =-x+60. 9. X + 2 What is the predicted score for a student who slept 6 hours the night before the exam?

Colby graphed a scatter plot of student exam scores (y) and the number of hours each student had slept the night before the exam (x). She drew the trend line and calculated its equation to be y =-x+60. 9. X + 2 What is the predicted score for a student who slept 6 hours the night before the exam?

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

ChapterP: Preliminary Concepts

SectionP.CT: Test

Problem 1CT

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Concept explainers

Correlation

Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.

Linear Correlation

A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.

Regression Analysis

Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.

Question

Colby graphed a scatter plot of student
exam scores (y) and the number of hours
each student had slept the night before
the exam (x). She drew the trend line and
calculated its equation to be y =-x+ 60.
2
What is the predicted score for a student
who slept 6 hours the night before the
exam?

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