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# I cannot understand what do they ask me to do?

While learning 'Python for Data Science' curse, I came across this challenge, which says: <<The given code includes a list of heights for various basketball players. You need to calculate and output how many players are in the range of one standard deviation from the mean>> (The code included is just a list: players = [180, 172, 178, 185, 190, 195, 192, 200, 210, 190]) Can somebody explain me this in other words please?

5 odpowiedzi

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1. Calculate mean value
2. Calculate standard deviation (std)
3. Count how many numbers lies in range [mean - std, mean + std]

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Igor Kostrikin I really thank you, I had calculated mean, median, variance and std xD to look for what could I do it.
But now I got it so thanks a lot :D

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Chepe, read carefully task description :
You need to calculate and output how many players are in the range of one standard deviation from the mean.
this is not python list, this is mathematical range.

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Igor sorry I'm an amateur and I cannot get why do you do a list with two elements (step 3): the mean and std substraction and the mean and std sum... I mean how does it work? I thought directions say that we have to find how many players lies in the range of the std and the mean.
could you explain me that step please? :D

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Igor Oooh yeah you are right, I'm so sorry thanks for the clarification :D