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Common Difference

Make a scatte...

Question

Make a scattered diagram of the data given below. Does any relationship exist between the two?

X 4 5 6 7 8 9 10 11 12 13 14 15

Y 78 72 66 60 54 48 42 36 30 24 18 12

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Solution

Yes, there exists perfect negative correlation (–1) between X and Y.

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Q. Make a scatter diagram from the following data and interpret the result.

X	4	5	6	7	8	9	10	11	12
Y	78	72	66	60	54	48	42	36	30

Q. Given the following pair of values of the variables X and Y:

X	8	10	12	11	9	7	13	14	15
Y	5	7	9	8	6	4	10	11	12

Also describe relationship between X and Y.

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