Question

sample mean and sample variance of the data 2,7,3,4,1 are​

Answer 1

Answer:

M = 3.4

SD = 2.3

SE = 1.03

Step-by-step explanation:

From the above question,

The sample mean is the average of the sample data that represents the middle of a set of numbers.

There are other ways to show this concept as well, such as a median and a mode.

Add up all the numbers:

         Sum = Σxi = 2+7+3+4+1 = 17

Count how many numbers there are:

         n = 5

Dividie the sum by the count:

Average  = Σxi / n

                = 17 / 5

Average  = 3.4

The sample mean is the average of the sample data, while the mean is the average of the entire population.

Usually, you don't have the data of the entire population, and you use the sample mean to estimate the mean of the entire population.

Hence,

M = 3.4

SD = 2.3

SE = 1.03

For more related question : https://brainly.in/question/51622536

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