SpletThe mean and standard deviation of a group of 100 observations were found to be 20 and 3 respectively. Later on it was found that three observations were incorrect which were … Splet22. sep. 2024 · Mean (100 observations) = 50. Formula: Mean = Sum of all observations/Number of observations. Calculation: Sum of 100 observations = 100 × 50 = 5000. Let the sum of 99 observations which were not replaced be ‘x’ ⇒ 100 th observation = 5000 – x = 60. ⇒ x = 4940. Now, Sum of all observations (new) = x + 160 = 4940 + 160 = …
Arithmetic Mean - Definition, Calculating, Examples - Cuemath
Splet16. mar. 2024 · Example 19 The mean and standard deviation of 100 observations were calculated as 40 and 5.1, respectively by a student who took by mistake 50 instead of 40 … Splet23. apr. 2024 · The Z score of an observation Z is defined as the number of standard deviations it falls above or below the mean. If the observation is one standard deviation above the mean, its Z score is 1. If it is 1.5 standard deviations below the mean, then its Z score is -1.5. Definition: The Z score hawthorn suites atlanta ga
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SpletMean of 100 observation =50∴ Total of 100 observation =100×50=5000If one of the observation 50 is replaced by 150 than total of new observation is = … SpletSolution: 132 – 100 = 32, which is 2(16). As such, 132 is 2 standard deviations to the right of the mean. 100 – 68 = 32, which is 2(16). This means that a score of 68 is 2 standard … Splet28. dec. 2024 · Mean of 100 observation =50. ∴Total of 100 observation=100×60=6000. If one of the observation 50 is replaced by 150 than total of new observation … hawthorn suites buffalo new york