Question

the Arithmetic mean of the numbers 10 20 30 and 40

Answer 1

Answer:

55 is the mean for dataset 10, 20, 30, 40, 50, . . . . , 90 & 100 from which the standard deviation about to be measured to estimate the common variation of the sample or population dataset from its central location

Step-by-step explanation:

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Answer 2

Answer:

25

the first rules to find mean is to add up all no.s and then devide that no. by how many no. of no.s are there...like here are 4 no.s 10,20,30,40....so we have to devide 4 from the addition of the 10,20,30,40

10+20+30+40=100/4=25