Type of correlation, Basic Statistics

The correlation coefficient can take values from -1 to 1. If the correlation coefficient lies in the range (-1,0) then we say that the correlation is negative, on the other hand if the correlation coefficient lies between (0,1) then the correlation is said to be positive.

a) What the correlation means in words. (For example, in a positive correlation we could say "As ____ increases, _____ increases.")

If on increase of one variable, another variable also increases, then we say that there is positive correlation between those two variables, on the other hand if increasing one variable results in decrease in second variable, then we say that the negative correlation exists.

b) The general interpretation of the correlation coefficient, i.e., whether it is a very strong relationship, a moderate relationship, a weak relationship, etc.

If the correlation coefficient is near 1 or -1 then we say that there is strong positive or negative correlation respectively.

If the correlation coefficient  is between 0.4 to 0.7 then we say that it is moderate relationship.

If the correlation coefficient is less than 0.4, then we say that the correlation is weak.

c) The correlation between grades in basic math and advanced math classes at a small liberal arts college where r = +.78.

Here we are given that the correlation is r = + 0.78, means there is high positive correlation between the considered variables.

d) The correlation between reading ability and social science grades in a middle school where r = +.52.

Here we are given that the correlation is r = + 0.52, means there is there is moderate relationship between the considered variables.

e) The correlation between test anxiety scores and grade on an achievement test where r = -.42.

There is negative correlation between test anxiety scores and grade on an achievement test.

f) The correlation between math aptitude scores and musical aptitude scores in second graders where r = +.28.

There is weak positive correlation between the between math aptitude scores and musical aptitude scores in second graders.

g) The correlation between the number of books read over a year and the scores on a popular video game where r = -.38.

There is weak negative correlation between the number of books read over a year and the scores on a popular video game.

Posted Date: 3/29/2013 6:28:00 AM | Location : United States







Related Discussions:- Type of correlation, Assignment Help, Ask Question on Type of correlation, Get Answer, Expert's Help, Type of correlation Discussions

Write discussion on Type of correlation
Your posts are moderated
Related Questions
difference between histogram and historigram

Foster Company makes 20,000 units per year of a part it uses in the products it manufactures. The unit product cost of this part is computed as follows: Direct materials $24.70 Dir

Cash flow analysis In financial sales, an income report, also known as report of money runs or funds circulation report is a financial report that shows how changes in stability


Definition of business valuation to determine the stock price of an entity. Business valuation is the value or price where a unit would be purchased at a given point in time. Usual

The descriptive statistics outputs for both the variables are as below: Wii Group Mean 95.8 Standard

Amount to be provided for retirement of long-term obligations An “other debit” common journal value used in the General Long-Term Bills Additional Consideration that symbolizes t

Flifla sells tomatoes every day in Suk al Marqazi, the downtown fruit and vegetable market. He finds that he can order tomatoes in crates of 25 kg and he is able to stock a maximum

hi i need help for an auditing assignment

what is historigram in statistics please give the problems and there solution in statistics as soon as possible