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# Statistics Question watch

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1. i am really stuck on the following question can somebody elp me on this i'm realy stuck:

here are 29 measurements given below:

4.07 4.88 5.10 5.26 5.27 5.29 5.29 5.30 5.34 5.34 5.36 5.39 5.42 5.44 5.46 5.47 5.50 5.53 5.55 5.57 5.58 5.61 5.62 5.63 5.65 5.75 5.79 5.85 5.86

if the data were standardised to a scale of mean zero and standard devation 1:
i)what would the smallest standardised value be?
ii) what value would correspond to a standardised value of +2.6?
2. (Original post by az1)
i am really stuck on the following question can somebody elp me on this i'm realy stuck:

here are 29 measurements given below:

4.07 4.88 5.10 5.26 5.27 5.29 5.29 5.30 5.34 5.34 5.36 5.39 5.42 5.44 5.46 5.47 5.50 5.53 5.55 5.57 5.58 5.61 5.62 5.63 5.65 5.75 5.79 5.85 5.86

if the data were standardised to a scale of mean zero and standard devation 1:
i)what would the smallest standardised value be?
ii) what value would correspond to a standardised value of +2.6?
A mean of zero and a standard deviation of 1 simply mean that the measurements are following the standard normal distribution curve. Im not sure if you knew this already. Unfortunately, I know little statistics (not sure what a standardised value is, I assume it is the value on the s.d. scale) but what I do now is that you should use calculators to answer questions like this. Invnorm and cdfnorm (on the TI-83) might be useful.

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