Homework SourseA psychologist developed a new test of adult intelligence Th
A psychologist developed a new test of adult intelligence. The test was administered to 20 individuals, and the following data were obtained.
104, 88, 121, 114, 107, 91, 95, 117, 109 ,105, 87, 93 ,134, 142, 122 ,95,115, 112 ,108, 108.
Construct a stem-and-leaf display for the data, using a leaf unit of 1.
Solution
Data given:
104, 88, 121, 114, 107, 91, 95, 117, 109 ,105, 87, 93 ,134, 142, 122 ,95,115, 112 ,108, 108.
Basic Statistics:
Stem and leaf plot
Stem and Leaf Plot:
| Minimum: | 0 |
| Maximum: | 142 |
| Count: | 24 |
| Sum: | 2167 |
| Mean: | 90.291666666667 |
| Median: | 106 |
| Mode: | 0 |
| Standard Deviation: | 43.353430401022 |
| Variance: | 1879.5199275362 |
