waecE-LEARNING
Further Mathematics Paper 2, May/June. 2013  
Questions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Main
General Comments
Weakness/Remedies
Strength








Question 14
  1. A bag contains 5 blue, 4 green and 3 yellow balls. All the balls are identical except for colour. Three balls are drawn at random without replacement. Find the probability that:          
    1. all three balls have the same colour;
    2. two balls have the same colour.
         b.The table shows the ranks of the marks scored by 7 candidates in physics and chemistry tests.

Physics

6

5

4

3

2

7

1

Chemistry

7

6

2

4

1

5

3

Calculate the Spearman’s rank correlation coefficient.
Observation


In part (b), candidates were expected to obtain the following table:

Rc

Rp

d

d2

7

6

1

1

6

5

1

1

2

4

-2

4

4

3

1

1

1

2

-1

1

5

7

-2

4

3

1

2

4

 

 

 

 = 16



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