Correlation and regression applet

Assignment Help Basic Statistics
Reference no: EM131744858

Use the applet. You are going to use the Correlation and Regression applet to make different scatterplots with 10 points that have correlation close to 0.8. CAUTION CAUTION Many patterns can have the same correlation. Always plot your data before you trust a correlation.

(a) Stop after adding the first 2 points. What is the value of the correlation? Why does it have this value no matter where the 2 points are located?

(b) Make a lower-left to upper-right pattern of 10 points with correlation about r = 0.8. Make a rough sketch of your scatterplot.

(c) Make another scatterplot, this time with 9 points in a vertical stack at the left of the plot. Add one point far to the right and move it until the correlation is close to 0.8. Make a rough sketch of your scatterplot.

(d) Make yet another scatterplot, this time with 10 points in a curved pattern that starts at the lower left, rises to the right, then falls again at the far right. Adjust the points up or down until you have a quite smooth curve with correlation close to 0.8. Make a rough sketch of this scatterplot also.

Reference no: EM131744858

Questions Cloud

A brand-new business for procter : Choose an organization which may be an existing company, nonprofit organization, or an idea for a new business, for- or non-profit.
What feature of the data is responsible : Use your calculator to show that the correlation is about 0.5. What feature of the data is responsible for reducing the correlation to this value
What is the probability : For a randomly selected elevator ride from the ground floor going up, what is the probability that the number of riders is within one standard deviation of mean
Reinforced by the widespread belief among negroes : The authors explain the atmosphere of hostility and cynicism is reinforced by the widespread belief among Negroes
Correlation and regression applet : You are going to use the Correlation and Regression applet to make different scatterplots with 10 points that have correlation close to 0.8.
What is one sentence that shows the pattern of cause : What is one sentence that shows the pattern of cause and? effect
Parents income and student loans : Parents' income and student loans. How well does the income of a college student's parents predict how much the student will borrow to pay for college?
Small falcons in sweden : Often the percent of an animal species in the wild that survives to breed again is lower following a successful breeding season.
What modality of training you will use : What modality of training you'll use. In other words, what will the training look like? How will it be delivered? What equipment do you need?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Statistics-probability assignment

MATH1550H: Assignment:  Question:  A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..

  What is the least number

MATH1550H: Assignment:  Question:     what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?

  Determine the value of k

MATH1550H: Assignment:  Question:     Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form

  What is the probability

MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?

  Binomial distributions

MATH1550H: Assignment:  Questions:  Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.

  Caselet on mcdonald’s vs. burger king - waiting time

Caselet on McDonald’s vs. Burger King - Waiting time

  Generate descriptive statistics

Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.

  Sampling variability and standard error

Problems on Sampling Variability and Standard Error and Confidence Intervals

  Estimate the population mean

Estimate the population mean

  Conduct a marketing experiment

Conduct a marketing experiment in which students are to taste one of two different brands of soft drink

  Find out the probability

Find out the probability

  Linear programming models

LINEAR PROGRAMMING MODELS

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd