Correlation or relationship between two variables

Assignment Help Basic Statistics
Reference no: EM1395486

This is a three part question.

We say that two things have a positive relationship if they move in the same direction, or as one thing increases, so does the other. Or if one thing decreases, so does the other. For example, a child's age and her dress size have a positive relationship. As the child's age increases, so does her dress size. Some more examples would be

The more I study, the higher my grades.

The more I eat, the more I weigh.

The more I say, "I love you" to my boyfriend, the more stuff he buys me.

Can someone give me some more examples of two variables that have a positive relationship?

When two variables move in the opposite direction, we describe the relationship as being inverse, or negative. That is, as one thing increases, the other decreases. For example, the more clothes I buy the less closet space I have. Or the more I drive my car, the less gas I have in my tank. Can someone please give me an example of two variables that have an inverse or negative relationship in every day life?

Sometimes, two variables do not have a relationship - although we think that they might. If I tried to correlate IQ and weight on a scattergram, I would probably end up with plot points all over the place. Sometimes, a non-existent relationship is obvious.
For example, one would expect no relationship between the color of a person's eyes and their ability to recite poetry. Name two variables where no relationship exists.....try to think of an obvious pair and try to think of two variables that people probably think have a relationship, but you think they do not. This is tough!!

Reference no: EM1395486

Questions Cloud

Assume that the na+ ions are moving from outside : Calculate the maximum [glucose]in/[glucose]out ratio that can be achieved by the plasma membrane Na+-Glucose symporter of an epithelial cell when the concentration of Na+ inside the cell is 12 mM.
Correlation coefficient and causation : What does a squared correlation coefficient represent? Also, does the strength of the correlation depend on the direction? Finally, does correlation imply causation.
Emissions for a kind of car vary by mean : Carbon monoxide (CO) emissions for a certain kind of car vary mean 2.4 g/mi and standard deviation 0.7g/mi. A company has 60 of these cars in its fleet. Let y represent the mean CO level for the companies fleet. Estimate the probability that y is ..
Illustrate what is the permissible range of futures prices : Suppose which the spot price of gold is $370 also buying an ounce of gold incurs transaction costs of $1.25. Gold can be stored for $.15 per month per ounce. Illustrate what is the permissible range of futures prices if expiration is nine months aw..
Correlation or relationship between two variables : We say that two things have a positive relationship if they move in the same direction, or as one thing increases, so does the other. Or if one thing decreases, so does the other.
Will this mutation allow oxygen to be transported : Fetal red blood cells carry a hemoglobin which has a mutation in the hemoglobin chains that reduces the affinity of 2,3-BPG for fetal hemoglobin.
Discuss essential biological molecules for the organism : As glucose is metabolized during respiration, a number of intermediate products are generated. Discuss how some of these intermediates are used to produce some of the essential biological molecules for the organism.
Evaluate the authors argument - management principles : Evaluate the authors argument that 'the management principles of TPS can be applied beyond manufacturing to any technical or service process'.
Draw the structure of carbohydrates : The structure and composition of glycoproteins determines the A, B and O blood groups in humans. Explain how this happens and draw the structure of carbohydrates attached to the blood antigen O in the Haworth projection, showing the correct glycos..

Reviews

Write a Review

Basic Statistics Questions & Answers

  One or two way anova

They want you to determine what the data indicate about this.In this problem I am having an issue trying to determine what equation to use to solve. Is this a one or two way ANOVA or should I just use a z-test to solve?

  Introduction to independent samples t-test

prevent coronary artery vasoconstriction and the attendant reduction in blood flow to the heart and mechanical function.

  Discuss the fields in poisson distribution

Discuss the fields in which Poisson distribution is applied. Why does it matter whether a population of arrivals is limited or unlimited?

  Probability of winning jackpot

Find the probability of winning jackpot?

  Difference between proportion of students of ear infection

At 0.05 level of significance, is there enough evidence to conclude that difference exists between proportion of students who have ear infections at one school and the other?

  Determining assignment of probabilities to six faces of die

If die is loaded so that 6 comes up with probability 0.2 and probabilities of 2,3,4, and 5 faces are not affected, determine the assignment of probabilities to the six faces?

  Objective function to minimize the total cost

a. Define variables that would tell how many units to purchase from each source. b. Develop an objective function that would minimize the total cost.

  Total sum of squares from anova table

Four properties are randomly selected from each neighborhood and the ratios recorded for each as follows:

  Equivalent test statistic

We want to test the hypothesis that population B has a smaller variance than population A.

  Olveout the following linear programming problem

LPP using the graphical method. Solveout the following linear programming problem utilizing the corner point method.

  Questions for testing and time series

To determine whether two categorical variables are independent, one should use the:

  Percent confidence interval for the true mean

Construct a 95 percent confidence interval for the true mean.

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