btm8107_8__week_2__activity_understanding

Aug 25th, 2016
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btm8107_8__week_2__activity_understanding

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1.Assumptions are needed to draw accurate conclusions about reality test Different assumptions are made for various statistical models and in order for models to reflect reality accurately; their assumptions need to be true. If assumptions are broken, accurate conclusions cannot be drawn about the data distribution. Therefore, part of the data process involves checking to make sure that your data doesn't fail this assumption.2..3. 4. Answer:For the variable Day 1:From the histogram of the variable Day 1 we see that the histogram of day 1 looks like normal distribution but its curve is slightly above the normal curve so it is leptokurtic and since the normal curve and data distribution curve is approximately same therefore data distribution is symmetric hence the data distribution is approximately symmetric normal distribution with kurtosis is leptokurtic. Also from the P-P plot of the data distribution we see that the data points are lying around the straight line therefore it is normal distribution.For the variable Day 2 From the histogram of the variable Day 2 we see that the histogram of day 2 looks like normal distribution but the maximum no of data points concentrate left of the normal curve therefore the data distribution is positively skewed and its curve is slightly above the normal curve so it is leptokurtic and since the normal curve and data distribution curve approximate same therefore data distribution is approxim

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