What is the difference between Cluster sampling and Stratified sampling

What is the difference between Statistics and Statistic?

Find the weighted Mean of a class that has the following grade structure 1 Final worth 35% of the grade, Grade= 80 4 Test worth 25% of the grade, Grade= 75 8 HW worth 30% of the grade, Grade = 70 4 quiz worth 10% of the grade, Grade = 80

 Estimate the mean from the IQ scores 50-89 in the table below:

Your friend continues to insist that numbers don’t lie. He points out that the y axis is going up by .5 degree intervals so the data has to be true. What would you say?

John decided to call his friends and neighbors. Some answered some did not. He found that 70% of those that answered love puppies. He concludes that 70% of MDC students like puppies. What would you advice John?

Compare Sample versus population

List the measures of Variation:

Bill Gates moves into your neighborhood. The US CENSUS comes and determines that the mean (average) income in your neighborhood is $1 million dollars a week. Which measure of center would you recommend to use and why

The heights of US women are normally distributed. You select a random sample of 13 women and find they have a mean height of 67 inches with a standard deviation of 5.3 inches. Construct and interpret a 99% confidence interval for the height of US women.