Statistics ITU Board 2081
Define positive and negative correlation. What are the required assumptions for correlation analysis? A data analytic company wants to find the relation between traffic in website (X) per day and…
10Define positive and negative correlation. What are the required assumptions for correlation analysis? A data analytic company wants to find the relation between traffic in website (X) per day and server downtime (Y) in minutes per day. The collected data are:
X
9
10
12
9
10
13
13
19
Y
26
38
27
45
55
80
84
100
- i) Find the correlation coefficient between x and y. Interpret the value.
- ii) Find the regression equation of y on x. Estimate the value of y when x = 16.
- iii) Interpret the value of y-intercept and slope of the line.
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