1. A) First you have to “clean” the data. Make sure that all of the measurements
ID: 3060754 • Letter: 1
Question
1. A) First you have to “clean” the data. Make sure that all of the measurements are in the same units and remove any incomplete data. Assume that this date is an independent random sample.
B) Check to see if the distribution is nearly normal.
C) You need to find a 95% confidence interval for the two means of the population that the data came from.
D) Find the correlation coefficient, plot the data, find the regression line. Make sure you explain what r2 is and what it means. Then you need to find a 95% confidence interval for 1 and then test they hypothesis that 1 = 0.
E) Summarize conclusion and include any charts used to reach this
Origional Dataset
"Clean" Dataset
Observatic height hand 15'6" 25'6" 6.75 3 4 5"9 7.5 51.82m ·18m 6 66" 7 70" 8 71" 6.5 7.5 9 175cm 20cm 17cm 10 5'6" 11 64" 12 5'7" 7.3 7.2 13 73 145'7" 7.5 15 71? 166'2" 7.25 17 73 18 5'3" 19 5'11 16.5CM 20 21 72 72 7.5 7.5
Explanation / Answer
Both the data have mean median mode nearly equal
skewness and kurtosis are low only for height hence height is normally distributed but not hands.
Height(cm) Hands(cm) 164.6 17.78 164.6 17.15 152.4 17.78 175.3 19.05 Column1 Column1 182 18 167.6 16.51 Mean 173.756 Mean 17.9205 177.8 19.05 Standard Error 2.208076372 Standard Error 0.610372395 180.3 17.78 Median 175.15 Median 18.355 175 20 Mode 164.6 Mode 19.05 167.6 17 Standard Deviation 9.874817733 Standard Deviation 2.729668333 162.6 18.54 Sample Variance 97.51202526 Sample Variance 7.451089211 170.2 18.29 Kurtosis -0.678573588 Kurtosis 11.97737467 185.42 20.32 Skewness -0.428496173 Skewness -3.110525978 170.2 7.5 Range 35.56 Range 12.82 187.96 18.42 Minimum 152.4 Minimum 7.5 185.42 20.32 Maximum 187.96 Maximum 20.32 160.02 16.5 Sum 3475.12 Sum 358.41 180.34 20.32 Count 20 Count 20 182.88 19.05 182.88 19.05Related Questions
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