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What is the difference between Cluster sampling and Stratified sampling

What is the difference between Cluster sampling and Stratified sampling

What is a z score

Which of these measures is affected by outliers and why

Find the weighted Mean of a class that has the following grade structure 1 Final worth 50% of the grade, Grade =90 4 Test worth 30% of the grade, Grade =89 10 HW worth 15% of the grade, Grade =88 6 quiz worth 5% of the grade , Grade = 80

Quartiles are

Which of these measures is affected by outliers and why

Find the weighted Mean of a class that has the following grade structure 1 Final worth 50% of the grade, Grade =90 4 Test worth 30% of the grade, Grade =89 10 HW worth 15% of the grade, Grade =88 6 quiz worth 5% of the grade , Grade = 80

What is the difference between Statistics and Statistic?

What is the difference between Statistics and Statistic?