Answer:
3
Step-by-step explanation:
correct on ed (:
Answer:
2
Step-by-step explanation:
4 is the common denominator.
1 and can be converted into + = we can divide both the numerator and denominator by 2 in order to simplify this fraction to get a fraction of
1 can be converted to a fraction of
Answer:
Mean=20.5
standard deviation=13.28
Step-by-step explanation:
We are given six samples i.e.
36, 14, 21, 39, 11, and 2
Mean is the average of all the samples
Mean= sum of all samples/no. of samples
Mean=(36+14+21+39+11+2)/6
Mean=20.5
Standard deviation is the positive square root of variance where
variance= sum of square of samples/number of samples-(mean)²
variance=(36²+14²+21²+39²+11²+2²)/6-(20.5)²
= 596.5-420.25
= 176.25
standard deviation= √(176.25)
standard deviation= 13.28