# Weighted mean: Quiz

Question 1:
Which of the following titles did Weighted mean have?
 Popular vote Weighted Mean 9th At Pine Royal Navy Receiving Ship in Hong Kong

Question 2:
Who wrote Weighted mean?
 David Conyers and John Sunseri Smith, David Ross David Sowka David Terr

Question 3: The significance of this choice is that this weighted mean is the ________ of the mean of the probability distributions under the assumption that they are independent and normally distributed with the same mean.
Maximum likelihoodNormal distributionGeneralized linear modelMaximum spacing estimation

Question 4: The biased weighted ________ is defined similarly to the normal biased sample variance:
Standard deviationNormal distributionProbability distributionVariance

Question 5: Typically when a mean is calculated it is important to know the variance and ________ of that mean.
Normal distributionMedianConfidence intervalStandard deviation

Question 6: For small samples, it is customary to use an ________ for the population variance.
Omitted-variable biasConfirmation biasBias of an estimatorSelection bias

Question 7: Formally, the weighted mean of a ________ of data
Set theoryEmpty setSet (mathematics)Topological space

Question 8: The weighted mean is similar to an arithmetic mean (the most common type of ________), where instead of each of the data points contributing equally to the final average, some data points contribute more than others.
StatisticsAverageGeometric meanStandard deviation