The following table shows the relation between price (X) and demand (Y) of certain items. Price (X) 10 20 40 50 80 90 Demand (Y) 2 5 6 2 4 3 a)…
Class 12 Business Mathematics · 2083 · Solved Question with Answer
The following table shows the relation between price (X) and demand (Y) of certain items.
| Price (X) | 10 | 20 | 40 | 50 | 80 | 90 |
| Demand (Y) | 2 | 5 | 6 | 2 | 4 | 3 |
a) Calculate the correlation coefficient by using Karl Pearson's method and interpret the result.
b) Find the equation of regression line *Y on X*.
c) The mean and variance of binomial distribution are 7.5 and 1.875 respectively. Find the number of trials (n).