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Consider the following data: Calculate and . Complete the table. Calculate .
Consider the following data:
| $x$ | $y$ | $x - \bar{x}$ | $y - \bar{y}$ | $(x - \bar{x})^2$ | $(y - \bar{y})^2$ | $(x - \bar{x})(y - \bar{y})$ |
|---|---|---|---|---|---|---|
| $2$ | $6$ | |||||
| $3$ | $4$ | |||||
| $4$ | $1$ | |||||
| $6$ | $1$ |
(a)[1.0]
Calculate $\bar{x}$ and $\bar{y}$.
(b)[1.0]
Complete the table.
(c)[1.0]
Calculate $b_{xy}$.
Answer
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From ISC 2025 Mathematics Paper 1, question 19(iii).