Statistics Flashcards
1
Q
What percentage of the values in a normal distribution lie within what range of the mean
A
68% of data lies within one standard deviation
95% of data lies within two standard deviation
99.7% of data lies within 3 standard deviatiob
2
Q
when can normal be used to approximate a binomial and how
A
when n is large and p is close to 0.5
then the mean is np
and the standard deviation is sqrt(np(1-p))
3
Q
A
