OR part of Q37(II): Find the mean rainfall in this season.

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Accepted Answer

Step 1: | Rainfall | $x_i$ | $f_i$ | $f_i x_i$ |
|----------|-------|-------|----------|
| $200$-$400$ | $300$ | $2$ | $600$ |
| $400$-$600$ | $500$ | $4$ | $2000$ |
| $600$-$800$ | $700$ | $7$ | $4900$ |
| $800$-$1000$ | $900$ | $4$ | $3600$ |
| $1000$-$1200$ | $1100$ | $2$ | $2200$ |
| $1200$-$1400$ | $1300$ | $3$ | $3900$ |
| $1400$-$1600$ | $1500$ | $1$ | $1500$ |
| $1600$-$1800$ | $1700$ | $1$ | $1700$ |
| | | $24$ | $20400$ |
Step 2: Mean $= \frac{20400}{24} = 850$

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