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:

$a$ =

$b$ =

correlation =

$n$ =

equation:
$\hat{y}$ =

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?

Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest.
Rafiq

Rafiq

what is differents between GO and RGO?

Mahi

what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.?
How this robot is carried to required site of body cell.?
what will be the carrier material and how can be detected that correct delivery of drug is done
Rafiq

The nanotechnology is as new science, to scale nanometric

brayan

nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale

Damian

Is there any normative that regulates the use of silver nanoparticles?

fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.

Tarell

what is the actual application of fullerenes nowadays?

Damian

That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.

Tarell

1 It is estimated that 30% of all drivers have some kind of medical aid in South Africa. What is the probability that in a sample of 10 drivers: 3.1.1 Exactly 4 will have a medical aid. (8) 3.1.2 At least 2 will have a medical aid. (8) 3.1.3 More than 9 will have a medical aid.