Question

Cookies A stemplot of the same cookies summarized in Exercise 1 is created, and the first row of that stemplot is 1 | 99. Identify the values represented by that row of the stemplot.

Chocolate Chips	Frequency
18-20	6
21-23	11
24-26	18
27-29	4
30-31	1

Short answer

The two values represented by 1|99 are 19 and 19, respectively.

Step-by-step solution

Given information

A stemplot is constructed for a frequency distribution showing frequencies of chocolate chips found in a cookie.

Chocolate chips	Frequency
18-20	6
21-23	11
24-26	18
27-29	4
30-32	1

One of the rows for the stemplot is given as 1|99.

Key of a stemplot

In a stemplot, the stems are arranged to the left of a vertical bar, and the leaves are arranged to its right.

When the observations are split into two parts, stems and leaves, the stems usually represent the tens or the hundreds part of the value, and the leaves represent the ones part of the corresponding stem.

The key to a stemplot is the representation of one of these values.

Interpret the row elements of the stemplot

The row of the stemplot is given as 1|99.

The value to the left of the vertical line is the stem, and the value(s) to the right side of the line is(are) the set of leaves corresponding to the stem.

As the stemplot is constructed from the frequency distribution that includes observations in two digits, it is inferred that the stem must consist of the tens digit while the leaf the units digits of an observation.

Thus, the row represents two values, 19 and19.

Therefore, the given row represents the number of chocolate chips equal to 19 and 19.