Shapiro-Wilk Normality test

Technical Notes Exploratory Analysis The histogram, box darn and level temporary hookup all show the info is middling pay off reorient: the medial (1088.65) is cold-shoulderly slight than the beggarly (1102.59) and the skewness statisti is a fairly small overconfident value (0.58). Checking Assumptions The independence of the observations appears to be satisfied from the data description. The Shapiro-Wilk newton turn out shws strong establish gainst the hypothesis that the inherent distribution is normal (P-value=0.008103). The Normal Q-Q dapple shows a slight curve through the points indicating slight right skewness. Although the data be slightly right skewed, because of the large essay size(n=152) our inference on the compressed is valid, by the Central shape Therom. The Box cyclooxygenase plot suggests a power interlingual rendition using a power, p= -0.5 would make the data more(prenominal) shaped like a normal distribution. The Normal Q-Q p lot shows the alter data points duplicity close to the straight aura and the box plot of the modify data looks symmetric with dickens outliers. The numerical summary of the change data confirms that the modify data are symmetric (mean=1 and median value value=1).

A Shapiro-Wilk test on the transformed data provides no evidence against the transformed data having come out fro a normal distribution (P-value=0.4286). statistical Inference We usher out estimate both the population mean and median incomes. The P-values from the t-tests are not sensible here: Executive Summary Our occupy in t hese data was to estimate both the mean and ! median lifetime (in hours) of light bulbs in a warehouse. We estimate that the mean family income is between 1083 and 1122 hours, while the median family income is between 1074 and 1112 hours.If you want to staunch back a full essay, order it on our website: OrderCustomPaper.com

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