I\'m just a little confused. Do I have figure out the values of each dot using t

Question

I'm just a little confused. Do I have figure out the values of each dot using the control data side to find the mean. Also I guess the -3s and all that on other side throwing me off to. Thank you for any help. Mainly looking for clarifications so I can figure out what to do next.

200 T +38 I 28 E 150 -2s ( -38 p 50 1. What is the calculated mean for the above set of data? 2. What are the calculated values for +1SD, -1SD, +2SD, -2SD, +3SD, 3SD?SD 3. How many population points are in this set of data?

Explanation / Answer

No, I don't think that the values of each dot needs to be found out as the dots lies in between a range of 20.

We can observe from the control data that the mean for the above set of data is 120. ( as there is a spacing of 20 between any 2 adjacent lines )

1SD = 20, -1SD = -20

2SD = 40, -2SD = -40

3SD = 60, -3-D = -60

Total number of population points can be found out by counting the number of dots which is equal to 21.

Hope this helps, you can comment for further specific clarification ( if any)

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