Box plots and outliers

Question 1

Box plots

Answer 1

Represents:
The maximum and minimum values
The median, upper and lower quartiles

Question 2

Outliers

Answer 2

Any value that is 1.5 times the interquartile range above the upper quartile or below the lower quartile

Question 3

Formula of outliers

Answer 3

For calculations involving standard deviation, an outlier is 3 standard deviations from the mean or mean+ or - 3 standard deviations