7.6 assessing normality

Question 1

assumptions that lead to rejecting the normality of a population

Answer 1

1. the sample contains an outlier
2. the sample exhibits a large degree of skewness
3. the sample has more than one distinct mode

Question 2

we often use plots to assess normality

Answer 2

tip 1

Question 3

stem and lead plots can be used instead of histograms to assess a population’s normality if the number of stems is large enough to provdie an idea of the shape of the sample

Answer 3

tip 2