How are the slope and intercept of a simple linear regression line calculated? What do they...

How are the slope and intercept of a simple linear regression line calculated? What do they tell us about the relationship between the two variables? Give example of problem.

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Expert Solution

the following data are passed:

Time of study	Mark
3	32
8	56
8	78
9	63
5	12

The independent variable is Time of studyTimeofstudy, and the dependent variable is MarkMark. In order to compute the regression coefficients, the following table needs to be used:

	Time of study	Mark	Time of study*Mark	Time of study2	Mark2
	3	32	96	9	1024
	8	56	448	64	3136
	8	78	624	64	6084
	9	63	567	81	3969
	5	12	60	25	144
Sum =	33	241	1795	243	14357

Based on the above table, the following is calculated:

orchestra answered 1 year ago

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