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Elective Mathematics

Elective Mathematics · Quick practice · answer shown after each question

Correlation

Question 1 of 10

Question 1 of 10

For 5 pairs of ranks, Σd² = 4. Using Spearman's formula, find the rank correlation coefficient.

Question 2 of 10

Question 2 of 10

A rank correlation coefficient of +1 means

Question 3 of 10

Question 3 of 10

A correlation coefficient close to 0 indicates

Question 4 of 10

Question 4 of 10

A line of best fit on a scatter graph should

Question 5 of 10

Question 5 of 10

The regression line of y on x passes through

Question 6 of 10

Question 6 of 10

For 6 pairs of ranks with Σd² = 14, Spearman's coefficient is

Question 7 of 10

Question 7 of 10

Spearman's coefficient uses the

Question 8 of 10

Question 8 of 10

If Σd² = 0 for 5 pairs of ranks, Spearman's coefficient is

Question 9 of 10

Question 9 of 10

A correlation coefficient of −1 indicates

Question 10 of 10

Question 10 of 10

A correlation coefficient of −0.9 shows

Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.