Exploring Measures of Central Tendency

What is the median value of a data set with an even number of entries?

• None of the above

• Sum of all numbers divided by two

• Average of two middle numbers

• Middle number in the set

How is the mean calculated in a data set?

• Middle value of the dataset

• Difference between highest and lowest values

• Sum of all values divided by the number of values

• Most frequently occurring value

What is the median of the dataset if the data points are 5, 3, 9, and 8?

• 6

• 7

• 8

• 5

What does an outlier in a data set refer to?

• A data point close to the mean

• The least frequent data point

• The most frequent data point

• A data point significantly different from other data points

What can significantly skew the results of the mean in a data set?

• Absence of data

• Presence of an outlier

• Equal distribution of all numbers

• Uniform distribution

Which measure of central tendency is less affected by outliers?

• Mean

• Median

• Mode

• All are equally affected

Why is a grocery store considered a good location for fair sampling?

• Only young people shop there

• Only wealthy people shop there

• People of all demographics shop there

• It is usually empty

Which location might introduce bias if sampling for general TV show preferences?

• Grocery store

• Comedy club

• Library

• School

Which of the following is a potential issue when selecting a sample from a baseball stadium for a general survey?

• It may over-represent sports fans

• It provides a very diverse sample

• It is usually empty

• It is representative of all age groups

What is the primary reason to avoid using basketball players' heights as a sample for average male height?

• It is a well-balanced sample

• Basketball players are typically shorter

• Basketball players are typically taller

• It includes only females