Question

I need to know the answer to this question please

Answer 1

First, order the dataset from least to greatest, as shown below

$354,356,368,372,374,378,378,381,388,399,412,419$

We will make a stem-and-leaf plot using stem units equal to 100; therefore, round the number above to the nearest tens

$350,360,370,370,370,380,380,380,390,400,410,420$

Then, use the first digits as stems and the second ones as leaves, obtaining the plot below,

Some information is lost in the process; therefore, another alternative is to use steam units equal to 10, obtaining the stem-and-leaf plot below

This version keeps all the information provided by the question.

Both plots are valid.