This module provides a lab of Linear Regression and Correlation as a part of Collaborative Statistics collection (col10522) by Barbara Illowsky and Susan Dean.
Class Time:
Names:
Student learning outcomes:
The student will calculate and construct the line of best fit between two variables.
The student will evaluate the relationship between two variables to determine if that relationship is significant.
Collect the data
Use 8 members of your class for the sample. Collect bivariate data (distance an individual lives
from school, the cost of supplies for the current term).
Complete the table.
Distance from school
Cost of supplies this term
Which variable should be the dependent variable and which should be the independent
variable? Why?
Graph “distance” vs. “cost.” Plot the points on the graph. Label both axes with
words. Scale both axes.
Analyze the data
Enter your data into your calculator or computer.
Write the linear equation below, rounding to 4 decimal places.
Calculate the following:
=
=
correlation =
=
equation:
=
Is the correlation significant?
Why or why not? (Answer in 1-3 complete sentences.)
Supply an answer for the following senarios:
For a person who lives 8 miles from campus, predict the total cost of supplies this term:
For a person who lives 80 miles from campus, predict the total cost of supplies this term:
Obtain the graph on your calculator or computer. Sketch the regression line below.
Discussion questions
Answer each with 1-3 complete sentences.
Does the line seem to fit the data? Why?
What does the correlation imply about the relationship between the distance and the cost?
Are there any outliers? If so, which point is an outlier?
Should the outlier, if it exists, be removed? Why or why not?
Questions & Answers
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1. Immune Response: The lymphatic system produces and transports lymphocytes, which are a type of
asegid
to transport fluids fats proteins and lymphocytes to the blood stream as lymph
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Kamara
yes
Prince
how does the stomach protect itself from the damaging effects of HCl
the normal temperature is 37°c or 98.6 °Fahrenheit is important for maintaining the homeostasis in the body
the body regular this temperature through the process called thermoregulation which involves brain skin muscle and other organ working together to maintain stable internal temperature