UGC NET Paper 1 — Statistics
52 questions across 5 years
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4 questions shown from 2023 in Data Analysis.
The mean and standard deviation of 70 observations are 47 and 9, respectively. If 3 is subtracted from each observation, the new mean and standard deviation will be
The mean and standard deviation of 75 observations are 45 and 10 respectively. If 2 is added to each observation, what will be the new mean and standard deviation?
The mean and standard deviation of 70 observations are 47 and 9 respectively. If 3 is subtracted from each observation, what will be the new mean and standard deviation?
The mean and standard deviation of 75 observations are 45 and 10, respectively. If 2 is added to each observation, the new mean and standard deviation will be