Can anyone Pls help me solve these questions

[Mactonto]

2. Suppose you have three distributions of DBP scores, each with a mean of 87:
Distribution A: 80, 82, 84, 86, 88, 90, 92, 94
Distribution B: 78, 80, 82, 84, 90, 92, 94, 96
Distribution C: 78, 79, 80, 81, 82, 98, 99, 99
a) Rank-order the standard deviations of the three distributions by magnitude
and provide your reasoning for the chosen rank order. [5 Marks]
b) Based on visual inspection, which of the three distributions is skewed?
Provide the reasoning for your answer. [2 Marks]

 

[Dr.Peterson]

What thoughts do you have? Do you know what standard deviation measures? Do you know what skew means?

If you have no thoughts yet, I suggest making a "dot plot" of the data in each case.

 

[Mactonto]

Alright.. Thanks for your suggestion

 

[HallsofIvy]

Since the problem asks me to "rank order the standard deviations" the first thing I would do is calculate the standard deviations!