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Splash Screen

Five-Minute Check (over Lesson 6–7) Main Idea and Vocabulary Example 1: Find the Mean Key Concept: Median Example 2: Find the Median Key Concept: Mode Example 3: Find the Mode Lesson Menu

I will find the mean, median, and mode of a set of data. Main Idea/Vocabulary

Step 1 Find the sum of the data. 100 + 40 + 88 + 90 + 92 = 410 Find the Mean Elijah received the following scores on his math test: 100, 40, 88, 90, 92. Find the mean of the data. Step 1 Find the sum of the data. 100 + 40 + 88 + 90 + 92 = 410 Step 2 Divide the number of pieces of data. 410 ÷ 5 = 82 Answer: So, the mean of Elijah’s math test scores is 82. Example 1

Julia received the following scores on her English tests: 100, 92, 88, 96, 98. Find the mean of the data. 95 98 93 96 A B C D Example 1

KC

Step 1 Order the numbers from least to greatest. Find the Median Find the median of the data: 92, 84, 97, 96, 88, 87, 90, 91, 91, 90, 93, 93 Step 1 Order the numbers from least to greatest. 84, 87, 88, 90, 90, 91, 91, 92, 93, 93, 96, 97 Step 2 The middle two numbers are 91 and 91. The median is the average of these two numbers, 91. Answer: So, the median of the data is 91. Example 2

Find the median of the data below. 32, 31, 31, 35, 36, 38, 32, 32, 40, 39, 35, 39 31 32 34 35 A B C D Example 2

KC

Step 1 Order the numbers from least to greatest. Find the Mode The costs of a loaf of wheat bread in different grocery stores are shown below. Find the mode of the data. $1.19, $1.49, $0.95, $1.30, $1.19, $1.30, $1.10, $1.25 Step 1 Order the numbers from least to greatest. $0.95, $1.10, $1.19, $1.19, $1.25, $1.30, $1.30, $1.49 The prices $1.19 and $1.30 each occur twice. So, the modes are $1.19 and $1.30. Answer: More grocery stores charge $1.19 or $1.30 than any other price. Example 3

Find the mode of the data. 1.21, 1.30, 1.42, 1.42, 1.30, 1.21, 1.35, 1.65, 1.21, 1.74, 1.45 1.21 1.30 1.42 1.65 A B C D Example 3

End of the Lesson End Lesson

Five-Minute Check (over Lesson 6–7) Image Bank Math Tool Chest Use an Appropriate Graph Resources

(over Lesson 6–7) Use the work backward strategy to solve. James has two dogs. When measured from tail to nose, his large dog is 3 times longer than his small dog, plus 2 inches. If his large dog is 47 inches long, how long is his small dog? 25 inches 20 inches 15 inches 6 inches A B C D Five Minute Check 1

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