CBSE Class 10 Maths (Basic) 2025 · Paper 430/1/1 · Question 35
The following data gives the information on the observed lifetime (in hours) of 200 electrical components. Find the mean lifetime (in hours) of the electrical components.
| Lifetime (in hours) | Number of electrical components |
|---|---|
| 0 - 20 | 10 |
| 20 - 40 | 35 |
| 40 - 60 | 50 |
| 60 - 80 | 60 |
| 80 - 100 | 30 |
| 100 - 120 | 15 |
Answer
The mean lifetime of the electrical components is hours.
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