Lab Activity 5 Sampling Distributions

Practical exercise on sampling distributions and statistical inference.

David Brown

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Lab Activity 51Lab Activity 5Sampling DistributionsData Set: Grocery ShoppingNumber of Questions:21.Sampling Distribution of Sample MeanUse the “Grocery_shopping” data set to complete question 1.This data set recorded the totalgrocery spending for 50 consumers at a local grocery store.a.Use software to find the descriptive statistics of the variableSpending.Copy and pasteyour outputbelow and answer the following questions: If you need to review how to do this,see question 4 on lab activity 2!The obtained output is given below,SpendingMean25.84Standard Error2.28Median20.74Mode#N/AStandard Deviation16.15Sample Variance260.93Kurtosis0.71Skewness1.10Range67.17Minimum2.32Maximum69.49Sum1291.82Count50i.What is the sample size?The sample size is 50.ii.What is the mean?The mean is 25.84.iii.What is the standard deviation?The standard deviation is 16.15.

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