Mean, median, mode, and outliers REVIEW

What is the mode?

• The average of all numbers in a data set.

• The number that appears most frequently in a data set.

• The middle value when the numbers are arranged in order.

• The largest number in a data set.

What is the median?

• The average of a set of numbers.

• The middle value in a set of numbers when they are arranged in order.

• The largest value in a set of numbers.

• The smallest value in a set of numbers.

What is the mean?

• The average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.

• The middle value in a set of numbers when arranged in order.

• The largest number in a set of numbers.

• The difference between the highest and lowest numbers in a set.

How do you identify an outlier in a data set?

• An outlier is a value that is significantly higher or lower than the other values.

• An outlier is the average of the data set.

• An outlier is a value that falls within the range of the data set.

• An outlier is a value that is equal to the median of the data set.

What is the importance of understanding mean, median, mode, and outliers?

• They are used to calculate the range of a data set.

• These concepts help in analyzing data sets and understanding the distribution of values.

• They are only relevant in statistical theory, not in practical applications.

• They help in determining the maximum value in a data set.

What happens to the mean if a very low number is added to the data set?

• The mean will increase.

• The mean will decrease.

• The mean will remain the same.

• The mean will become negative.

What happens to the mean if a very high number is added to the data set?

• The mean will decrease.

• The mean will remain the same.

• The mean will increase.

• The mean will become negative.

How do you find the mean of a data set?

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

• Multiply all the numbers together and divide by the total count of numbers.

• Add the largest and smallest numbers and divide by 2.

• Subtract the smallest number from the largest number.

What is an outlier?

• A value that is much higher or much lower than the other values in a set of data.

• A value that is exactly the same as the mean of the data set.

• A value that is the median of the data set.

• A value that falls within the interquartile range of the data set.

In the data set 90, 85, 0, 90, 80, 100, which number is the outlier?

• 90

• 85

• 0

• 80