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Q: What is a moderate correlation?
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What type of correlation will the data have for a scatter plot of ages and heights of all students in your school?

It depends on the range of ages, but a moderate positive correlation.


When you have a scatter plot and you have to choose a correlation I know Positive Negative and no correlation are options Is moderate correlation an option?

Yes. * A positive correlation is when the dependant variable increases as the independent one does. * A negative correlation is when the dependant variable decreases as the independent one increases. * Perfect correlation is when all the points lie along a straight line; no correlation is when the points lie all over the place. In calculating the correlation coefficient it can have a value between -1 and 1, with 0 indication no correlation and values between 0 and ±1 showing a greater correlation until ±1 which is perfect correlation. Moderate correlation would be one of these intermediate values, eg ±0.5, which shows the points are moderately related.


What is a sample correlation?

If measurements are taken for two (or more) variable for a sample , then the correlation between the variables are the sample correlation. If the sample is representative then the sample correlation will be a good estimate of the true population correlation.


What is a Correlation coefficient of 0.00457?

Evidence that there is no correlation.


What are the trends of a line?

They can be positive correlation, negative correlation or no correlation depending on 'line of best fit'