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
first question: Glaser Services acquired 30% of the outstanding common stock of Nickels Company on January 1, 2008, by paying $864,180 for the 48,010 shares. Nickels declared and p

Quartiles and Percentiles Percentile can be explained as : a measure this tells us what is the percent of the total frequency scored at or below the measure. Quartiles

Which date is used to record a credit card transaction? When a company uses its bank greeting cards, the transaction time frame is the time frame the bank greeting cards is used

Clipping is one form of distortion that occurs when an amplifier is overdriven, which happens when it attempts to increase voltage or current beyond its limits. When an amplifier

types of netwoths

1. This question has multiple parts. For a distribution of scores with = 82 and standard deviation = 2.5, find the following: (Don't forget to sketch the normal curve to help


Table 2: Mathematics Score/Jadual 2: Skor Matematik 27 37 30 28 39 25 45 28 32 28 26 38 31 30 47 41 a) Based on Table 2, organize the data into a frequency distribution by taking

comprehensive problem 1 chapter4

Q. What is Sample Population? Choosing a sample population is one of the most important factors in gathering statistical data because all of the claims will be based on the sam