SPSS assignment: - Essay Example

SPSS Assignment In the table below we present the descriptive (summary) statistics for the variable weight collected from 7th grade boys in 2014 at "A" Junior High in Some Town USA. The average weight is 158.75 with a median of 165. The standard deviation and the range shows a large deviation from the mean. The skewness value is given as 0.315, this shows that the distribution is not far from symmetrical (data being normally distributed). Lastly, we look at the value of kurtosis, the value is given as -0.

219 (a value close to zero), this shows that the data is likely to be from a Gaussian distribution. StatisticsweightNValid53Missing0Mean158.75Median165Std. Deviation35.6489Variance1271Skewness.315Std. Error of Skewness.327Kurtosis-.219Std. Error of Kurtosis.644Range160.00To further check on the normality of the data set, a histogram with a normal curve is plotted. From the figure, we observe that the value is closer to the bell-shaped curve hence the data can be thought of coming from a normal distribution.