Lab Activity 5 Sampling Distributions
Practical exercise on sampling distributions and statistical inference.
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Lab Activity 5 1
Lab Activity 5 Sampling Distributions
Data Set: Grocery Shopping
Number of Questions: 2
1. Sampling Distribution of Sample Mean
Use the “Grocery_shopping” data set to complete question 1. This data set recorded the total
grocery spending for 50 consumers at a local grocery store.
a. Use software to find the descriptive statistics of the variable Spending. Copy and paste
your output below 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,
Spending
Mean 25.84
Standard Error 2.28
Median 20.74
Mode #N/A
Standard Deviation 16.15
Sample Variance 260.93
Kurtosis 0.71
Skewness 1.10
Range 67.17
Minimum 2.32
Maximum 69.49
Sum 1291.82
Count 50
i. 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.
Lab Activity 5 Sampling Distributions
Data Set: Grocery Shopping
Number of Questions: 2
1. Sampling Distribution of Sample Mean
Use the “Grocery_shopping” data set to complete question 1. This data set recorded the total
grocery spending for 50 consumers at a local grocery store.
a. Use software to find the descriptive statistics of the variable Spending. Copy and paste
your output below 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,
Spending
Mean 25.84
Standard Error 2.28
Median 20.74
Mode #N/A
Standard Deviation 16.15
Sample Variance 260.93
Kurtosis 0.71
Skewness 1.10
Range 67.17
Minimum 2.32
Maximum 69.49
Sum 1291.82
Count 50
i. 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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Subject
Statistics