Spearman's Rho

Question 1

Equation

Answer 1

Question 2

Ranking data: Quick recap

Answer 2

1. Put results in ascending order.
2. Lowest score rank 1 etc
3. If scores share ranks then they share the mean of those ranks

Question 3

Calculation steps

Answer 3

1. Calculate the ranks for variable 1.
2. Calculate the ranks for variable 2
3. Calculate difference (d)-Subtract variable 2 ranks from variable 1 ranks for
   each participant.
4. Square d for each participant (d²).
5. Sum d²
6. Then use formula

n=the number of pairs used

Σ=”the sum of”

d’“the square of differences in rank

7. This is the calculated correlation co-efficient

Question 4

Checklist

Answer 4

Ordinal data

Test for relationship between co-variables

Question 5

Significance

Answer 5

If the calculated r,value is greater than or equal to the critical r,value the result is significant reject Null Hypothesis. If the calculated r value is less than the critical r value the result is not significant = accept Null Hypothesis.

Question 6

Example

Answer 6