Question

In West Texas, water is extremely important. The following data represent pH levels in ground water for a random sample of 102 West Texas wells. A pH less than 7 is acidic and a pH above 7 is alkaline. Scanning the data, you can see that water in this region tends to be hard (alkaline). Too high a pH means the water is unusable or needs expensive treatment to make it usable.† These data are also available for download at the Companion Sites for this text. For convenience, the data are presented in increasing order.

In West Texas, water is extremely important. The following data represent pH levels in ground water for a random sample of 102 West Texas wells. A pH less than 7 is acidic and a pH above 7 is alkaline. Scanning the data, you can see that water in this region tends to be hard (alkaline). Too high a pH means the water is unusable or needs expensive treatment to make it usable.t These data are also available for download at the Companion Sites for this text. For convenience, the data are presented in increasing order. x: pH of Ground Water in 102 West Texas Wells 7.07.0 7.0 7.0 7.0 7.0 7.0 7.0 7.1 7.17.1 7.1 7.1 7.1 7.17.1 7.17.1 7.27.2 7.27.2 7.2 7.2 7.2 7.2 7.27.27.3 7.37.37.37.37.3 7.37.3 7.3 7.3 7.37.4 7.4 7.4 7.47.47.4 7.4 7.4 7.4 7.5 7.57.57.57.57.5 7.57.57.6 7.6 7.67.6 7.6 7.6 7.6 7.6 7.6 7.7 7.7 7.77.7 7.7 7.7 7.8 7.8 7.8 7.87.8 7.97.97.9 7.97.9 8.0 8.1 8.1 8.1 8.1 8.1 8.1 8.1 8.2 8.2 8.2 8.28.2 8.2 8.2 8.4 8.5 8.6 8.7 8.8 8.8 Make a stem-and-leaf display. Use five lines per stem so that leaf values O and 1 are on one line, 2 and 3 are on the next line, 4 and 5 are on the next, 6 and 7 are on the next, and 8 and 9 are on the last line of the stem. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.) pH of Ground Water

Answer 1

Following is the stem and leaf display: