WebIf the mean of 5 observations x, x + 2, x + 4, x + 6 and x + 8 is 11, then the mean of the last three observations is- A. 11 B. 13 C. 15 D. 17 Answer: Option B Solution (By … Web22 aug. 2024 · Average of a data = sum of total observations / total number of observations According to the question (x + x+3 + x+5 + x+7 + x+10)/5 = 9 (5x +15)/5 = 9 x + 3 = 9 x = 6 Now, the terms become 6, 6 + 3, 6 + 5, 6 + 7, 6 + 10 = 6, 9, 11, 13, 16 So, the mean of the last three observations = ( 11 + 13 + 16)/3 = 40/3 = 11 1/3

If the mean of the observations : x, x + 3, x + 5, x + 7, x - Cuemath

WebIf the mean of five observations `x , x+2, x+4, x+6, x+8 i s 11 ,` then the mean of first three observations is 9 (b) 11 (c) 13 (d) none of these askedJan 18, 2024in Mathematicsby JaspreetMehta(25.0kpoints) class-9 mean median-and-mode-of-ungrouped-data 0votes 1answer The mean of 25 observation is 36. WebJEE Main 2024: If mean and standard deviation of 5 observations x1, x2, x3,x4,x5 are 10 and 3, respectively, then the variance of 6 observations x1,x2. Tardigrade - CET NEET … recup konstanz

Important Questions for CBSE Class 9 Mathematics Statistics

WebIf each observation has been divided by 5, then the new sum of the 10 observations = 10x/5 = 2x. The new mean of the 10 observations = 2x/10 = x/5. So, none of the … WebIf the mean of 5 observations x, x + 2, x + 4, x + 6 and x+ 8 is 48, what the mean of the last fourobservations is? Ok the Mean is the total sum/no of observations the sum of … Web4 jun. 2014 · If mean of five observations x, x + 2, x + 4, x + 6, x + 8 is 11, find mean of first three observations. Asked by Topperlearning User 04 Jun, 2014, 01:23: PM … recup objet