Question
Which data set contains an outlier?
Responses

a. {45, 46, 47, 47, 49, 49}

b. {9, 10, 10, 11.4, 12.1, 12.6}

c. {15, 15, 15, 16, 16, 17, 18}

d. {16, 42, 45, 45, 46, 48}