- A220
- B300
- C260
- D180
Step-by-Step Solution
Total for 5 days . The other bars give . Thursday .
Answer: A) 220
A museum in Kolkata counted its visitors from Monday to Friday. The mean was 300 visitors a day, but Thursday's bar got covered. How many visitors came on Thursday?
Class 7Data HandlingData Handling
Key idea: Mean — the 'fair share'
The **mean** is what each person would get if you redistributed everything evenly. Sum the values, divide by the count.
Example: marks 8, 6, 7, 9, 10. Sum = 40. Count = 5. Mean = 40 ÷ 5 = 8.
Mean is the most common 'average' but it can be pulled up or down by extreme values (one very high or very low number).
Example: marks 8, 6, 7, 9, 10. Sum = 40. Count = 5. Mean = 40 ÷ 5 = 8.
Mean is the most common 'average' but it can be pulled up or down by extreme values (one very high or very low number).
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