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प्रश्न
A set of n values x1, x2, ..., xn has standard deviation 6. The standard deviation of n values x1 + k, x2 + k, ..., xn + k will be ______.
विकल्प
σ
σ + k
σ – k
kσ
उत्तर
A set of n values x1, x2, ..., xn has standard deviation 6. The standard deviation of n values x1 + k, x2 + k, ..., xn + k will be σ.
Explanation:
If each observation is increased by a constant k
Then standard deviation is unchanged.
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संबंधित प्रश्न
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Find the mean and variance for the data.
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| fi | 2 | 4 | 7 | 12 | 8 | 4 | 3 |
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2, 4, 5, 6, 8, 17.
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