Measures of Tendency and Stem and Leaf Plot

When you are trying to find the MEDIAN of a set of data and 2 numbers are left in the middle after putting them in order from least to greatest, what do you do?

• List both numbers as the median

• Add the 2 numbers and divide by 2

• Pick the one you want

• Subtract the 2 numbers

The number that occurs most often in a data set is called the __________

• mean

• median

• mode

• range

The middle number in an ordered set of data is called the ___________

• mean

• median

• mode

• range

The mode score on the Algebra test was 94. Which of these interpretations must be correct?

• 99 was the highest score

• More students received a 94 than any other score

• No student scored below a 50

• A score of 91 was slightly below the average

To find the average of a set of numbers, add all the numbers in the data set and divide by __________

• 2

• largest number

• smallest number

• the number of items in the set

The average is called the __________

• mean

• median

• mode

• range

Find the median of these numbers:
4, 2, 7, 4, 3

• 2

• 5

• 7

• 4

What is the mode in the following numbers? [3, 24, 3, 7, 30, 1, 3, 7, 3]

• 3 and 7 both are modes

• 1 and 7 both are modes

• 3 only

• 7 only

What is the median of the data?

• 200

• 100

• 90

• 140

What is the Q3 of this data set?
6, 7, 2, 1, 5, 2, 1, 6

• 5

• 6

• 5.5

• 6.5