The analyst randomly surveyed nine JSE-listed companies and recorded their inventory turnover (x) and their earning yield (y). The following table shows the part of the data.
Inventory Turnover (x) 3 5 4 7 6 4 8
Yield (y) 10 12 8 13 15 10 16
(a) Compute the correlation coefficient
(b) Interpret the correlation coefficient
(c) Compute the coefficient of determination
(d) Interpret, in context, the coefficient of determination
(e) Fit linear trend equation
(f) Estimate the GDP by using the trend line equation
(g) Interpret, in context, the gradient/slope of the trend line
(h) Forecast the yield when inventory turnover is 9.
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