Compare distributions and choose a measure

Answer: 7214​

1. Group A total =93 and Group B total =307.
2. Each has 7 scores
3. the difference of means is 7307−93​=7214​(about 30.57142857).

Answer: 22

1. The fourth value is the median of each ordered set: A=12,B=34.
2. Difference =34−12=22.

Answer: They are equal

1. A ranges from 6 to 21, giving 15.
2. B ranges from 8 to 23, giving 15.
3. Adding a constant does not change spread;
4. multiplying every value scales it.