Spearman's rank correlation coefficient

Question 1

what does the Spearman’s’ rank statistical test tell you

Answer 1

whether or not two data sets are correlated or not

Question 2

what are your values in this stats test always going to be

Answer 2

between 1 and -1
- where 1 is strong positive correlation
- 0 is no correlation
- and -1 is strong negative correlation

Question 3

what is positive correlations

Answer 3

when one set of data increases in value, so does the other set of data

Question 4

what is negative correlation

Answer 4

when one set of data increases in value, the other set of data decreases in value

Question 5

what is the basic process of calculating Spearman’s rank

Answer 5

• you rank the two data sets
• work out the differences in ranks
• and input it into the formula, where:
• d is the difference
• and n is the number of pairs you have
• can be later compared to a data table, to show correlation