3. A mathematics placement test is given to all entering freshmen at a smallcollege. A student who receives a grade below 35 is denied admission to theregular mathematics course and placed in a remedial class. The placement testscores and the final grades for 20 students who took the regular course wererecorded as follows:Placement Test Course Grade | Placement Test | Course Grade50539054353541806091614840566071556860716536404735115553607050689079655735595079(a) Plot a scatter diagram.(b) Find the equation of the regression line to predict course grades fromplacement test scores.(c) Graph the line on the scatter diagram(d) If 60 is the minimum passing grade, below which placement test scoreshould students in the future be denied admission to this course?

(a) Plot a scatter diagram. (b) Find the equation of the regression line to predict course grades placement test scores. (c) Graph the line on the scatter diagram (d) If 60 is the minimum passing grade, below which placement test

(a) Plot a scatter diagram. (b) Find the equation of the regression line to predict course grades placement test scores. (c) Graph the line on the scatter diagram (d) If 60 is the minimum passing grade, below which placement test

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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

100%

3. A mathematics placement test is given to all entering freshmen at a small
college. A student who receives a grade below 35 is denied admission to the
regular mathematics course and placed in a remedial class. The placement test
scores and the final grades for 20 students who took the regular course were
recorded as follows:
Placement Test Course Grade | Placement Test | Course Grade
50
53
90
54
35
35
41
80
60
91
61
48
40
56
60
71
55
68
60
71
65
36
40
47
35
11
55
53
60
70
50
68
90
79
65
57
35
59
50
79
(a) Plot a scatter diagram.
(b) Find the equation of the regression line to predict course grades from
placement test scores.
(c) Graph the line on the scatter diagram
(d) If 60 is the minimum passing grade, below which placement test score
should students in the future be denied admission to this course?

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