Is a standard deviation of 10 a large number indicating great variability, or is it a small number indicating little variability?
To answer this question correctly one should look carefully at the value of the:

a) mean
b) standard deviation
c) mean divided by the standard deviation
d) co-efficient of variation

Two students were asked if they liked to read. is this a good example of a statistical question? why or why not? a yes, this is a good statistical question because a variety of answers are given. b yes, this is a good statistical question because there are not a variety of answers that could be given. c no, this is not a good statistical question because there are not a variety of answers that could be given. no, this is not a good statistical question because there are a variety of answers that could be given

Reflect the point (7,0) across the y-axis

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?