Mean, Median, Mode, Range

What is the Median of the following data set: 36, 42, 28, 52, 48, 36, 31?

• 28

• 36

• 42

• 48

What is the definition of Mode?

• The mode is the value that appears most frequently in a data set.

• The mode is the average of all values in a data set.

• The mode is the middle value when the data set is ordered.

• The mode is the highest value in a data set.

What is the relationship between Mean, Median, and Mode in a normal distribution?

• In a normal distribution, the mean, median, and mode are all equal.

• In a normal distribution, the mean is greater than the median and mode.

• In a normal distribution, the median is less than the mean and mode.

• In a normal distribution, the mode is always the highest value.

Given the scores: 90 (6 times), 96 (5 times), 80 (3 times), calculate the weighted mean.

• 88

• 90

• 92

• 94

What is the formula for Weighted Mean?

• Weighted Mean = (Σ (value × weight)) / Σ (weights)

• Weighted Mean = (Σ (value + weight)) / Σ (weights)

• Weighted Mean = (Σ (value - weight)) / Σ (weights)

• Weighted Mean = (Σ (value × weight)) + Σ (weights)

What is the definition of Median?

• The median is the average of a set of numbers.

• The median is the middle value in a set of numbers when they are arranged in ascending or descending order.

• The median is the highest value in a set of numbers.

• The median is the difference between the highest and lowest values in a set of numbers.

If a data set has no repeating numbers, what can you say about the Mode?

• The mode is the highest number in the data set.

• The mode is the average of the data set.

• The data set has no mode.

• The mode is the most frequently occurring number.

How do you determine if a data set is skewed?

• A data set is skewed if the mean and median are equal.

• A data set is skewed if the mean is less than the median.

• A data set is skewed if the mean and median are not equal; if the mean is greater than the median, it is positively skewed, and if the mean is less, it is negatively skewed.

• A data set is skewed if all values are the same.

How do you calculate the Midrange?

• By subtracting the lowest value from the highest value

• By adding the highest and lowest values together and dividing by 2

• By finding the average of all values

• By taking the median of the dataset

How do you find the Median of a data set?

• Arrange the numbers in order and identify the middle value. If there is an even number of values, average the two middle values.

• Add all the numbers together and divide by the total count.

• Select the highest value in the data set as the median.

• Choose the most frequently occurring number in the data set.