If the mean of the data 40,45,14,40,x,14,39,is 30 then the value of x is _____
Answers
Answered by
1
Answer:
x=18
Step-by-step explanation:
mean =sum of the observations /no of the observations
given mean =30
30=40+45+14+40+x+14+39/7
30×7=192+x
210-192=x
18=x
x=18
Answered by
1
Answer:18 = x
Step-by-step explanation:
Mean = (Sum of all observations)/(No. of observations)
Sum of all observations = 40 + 45 + 14 + 40 + x + 14 + 39
= 192 + x
No. of observations = 7
Mean = 30
Putting values:
30 = (192 + x)/7
210 = 192 + x
18 = x
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