Mean of 100 observations was found to be 45 . It was later found that two observations 19…
Mathematics · JEE Main · NTA Exams — Statistics and Probability
Mean of 100 observations was found to be 45 . It was later found that two observations 19 and 31 were incorrectly recorded as 91 and 13 . The correct mean is
- 44.0
- 44.46
- 45.00
- 45.54
Answer
(B) 44.46
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- There are n-persons sitting in a row. Two of them are selected at random. The probability that two selected…
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. STATEMENT …
- An unbiased cubic die marked with 1, 2, 2, 3, 3, 3 is rolled 3 times. The probability of getting a total…
- The mean of a set of observations is x . If each observation is divided by α,α ≠ 0 and then is increased by…
- The probability of guessing correctly atleast 8 out of 10 answers on a true-false type examination is
- Suppose that a random variable X follows Binomial distribution with parameters n and p, where 0 < p < 1 . If…
- Three persons A, B and C fire at a target in turn, starting with A. Their probabilities of hitting the target…
- The mean of 100 observations is 50 and their standard deviation is 5 . The sum of squares of all observations…
More Statistics and Probability questions · Browse all practice questions