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Magazine Chapter 2: Q7 (page 65)
In Exercises 7 and 8, construct the stem plot.
Pulse Rates Refer to the data listed in Exercise 5. How are the data sorted in the stemplot?
Short Answer
The following stemplot is generated using the values of the female pulse rates:
The data are arranged in increasing order starting from 36 to 94.
Step by step solution
Given information
The data given concerns the female pulse rates (beats per minute).
Describe a stemplot
A stemplot is a graph that consists of two parts, stems and leaves, marked on either side of a vertical line. Each of the data values (observation) are split into stem and leaf according to the number of digits or the decimal values they contain.
The stemplot has the data values arranged from the smallest to the largest.
Sketch the stemplot
A stemplot is sketched through the following steps:
- Arrange the data values in ascending order.
- Consider the tenth unit of the two-digit observation as the stem and units digit as the corresponding leaf.
- Draw a vertical line in the middle separating stems from leaves.
- Write the stems on the left side and the leaves on the right side.
- Note down the key of the stemplot.
The following stemplot is constructed:
Key: 3|6 represents 36 beats per minute.
The values in the stemplot are arranged in ascending order, from top to bottom.
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