UPSKILL MATH PLUS
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Learn more1. Prices of peanut packets in various places of the two cities are given below. In which city prices were more stable?
| Prices in city \(A\) | \(20\) | \(22\) | \(19\) | \(23\) | \(16\) |
| Prices in city \(B\) | \(10\) | \(20\) | \(18\) | \(12\) | \(15\) |
Answer:
Prices in city were more stable.
2. The mean and standard deviation of marks obtained by \(40\) students of a class in three subjects Mathematics, Science and Social Science are given below.
| Subject | Mean | SD |
| Mathematics | \(56\) | \(12\) |
| Science | \(65\) | \(14\) |
| Social Science | \(60\) | \(10\) |
Which of the three subjects shows highest variation and which shows lowest variation in marks?
Answer:
Highest variation is .
Lowest variation is .
3. The temperature of two cities \(A\) and \(B\) in a winter season are given below:
| Temperature of city \(A\) (in degree Celsius) | \(18\) | \(20\) | \(22\) | \(24\) | \(26\) |
| Temperature of city \(B\) (in degree Celsius) | \(11\) | \(14\) | \(15\) | \(17\) | \(18\) |
Find which city is more consistent in temperature changes?
Answer:
City is more consistent.
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