1. A professor wanted to be able to predict exam score based on how many homework problems students works, so she collected the following data. # Homework 7 12 4 16 25 Problems Worked Exam Score .68 86 .05 .37 29 89 1 (out of 1 or 100%) a. Make a scatterplot of the data, using # Homework Problems Worked as the explanatory/independent/predictor variable, and Exam Score as the response/dependent variable.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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1. A professor wanted to be able to predict exam score based on how many
homework problems students works, so she collected the following data.
# Homework
7
12
1
4
16
25
Problems Worked
Exam Score
.68
.86
.05
.37
.29
89
1
(out of 1 or 100%)
a. Make a scatterplot of the data, using # Homework Problems Worked as the
explanatory/independent/predictor variable, and Exam Score as the
response/dependent variable.
b. Write down the equation of the regression line for modeling average Exam
Score as a function of the # Homework Problems Worked.
c. What is the percentage of variation in the Exam Score variable that can be
explained or predicted by using # Homework Problems Worked as the
explanatory variable? That is, what is the coefficient of determination, r?
以
* Accessibility: Investigate
1 of 7
797 words
Text Predictions: On
a
hp
田
|三
Transcribed Image Text:Insert Draw Design Layout References Mailings Review View Help ome Calibri (Body) V 14 v A A Aa v A Paste BIUV x, A Clipboard Font Paragraph 1. A professor wanted to be able to predict exam score based on how many homework problems students works, so she collected the following data. # Homework 7 12 1 4 16 25 Problems Worked Exam Score .68 .86 .05 .37 .29 89 1 (out of 1 or 100%) a. Make a scatterplot of the data, using # Homework Problems Worked as the explanatory/independent/predictor variable, and Exam Score as the response/dependent variable. b. Write down the equation of the regression line for modeling average Exam Score as a function of the # Homework Problems Worked. c. What is the percentage of variation in the Exam Score variable that can be explained or predicted by using # Homework Problems Worked as the explanatory variable? That is, what is the coefficient of determination, r? 以 * Accessibility: Investigate 1 of 7 797 words Text Predictions: On a hp 田 |三
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