the last question of lab 1

the last question of lab 1

by Ping Wang -

Hi,

I'm confused about last question asking for --17 c):

It says to analyse question 8, does that ask for the analysis of the corrolation between variables age and cac, which refers to a scatter plot? if not, what should I report?

Thanks!

Re: the last question of lab 1

by Brett Ley -

Hi,

The question is asking you which correlation test you would use (and therefore which correlation coefficient you would report) to analyze the correlation between age and CAC scores using what you learned about the distribution of these variables in question 8.

Hint: Pearson's correlation is used when BOTH continuous variables are reasonably normally distributed and Spearman's is used if either variable is not normally distributed.

Brett