Math II

Today’s Question:How do we construct a box plot?Standard: MM1D3.a.

Step 1: Organize your data by listing it from the smallest to largest number! Find the mean, median, mode and range.

Temperatures: 18, 19, 17, 20, 24, 16, 31, 33, 36, 62

Quiz Scores: 100, 105, 73, 85, 42, 82, 78, 76, 84, 87, 79

The mean of the data set is its average.

To find the mean you add up all the numbers and divide the answer by how many numbers you have.

Mean = 27.6

18 + 19 + 17 + 20 + 24 + 16 + 31 + 33 + 36 + 62 = 276; 276 / 10

Temperatures: 18, 19, 17, 20, 24, 16, 31, 33, 36, 62

The Median is the number which is in the exact middle of the data set.

Median = 22

Temperatures: 16, 17, 18, 19, 20, 24, 31, 33, 36, 62

The Mode is the number that appears the most often if you are working with only one variable.

Mode = no mode

Temperatures: 18, 19, 17, 20, 24, 16, 31, 33, 36, 62

Find the range, mean, median, and mode for the following data set.

Temperatures: 16, 17, 18, 19, 20, 24, 31, 33, 36, 62

Range = 62 – 16 = 46

The numbers below represent the temperatures in Kennesaw in January.

16,17,18,19,20,24,31,33,36,62

Q1 = 18 Q3 = 33

Interquartile Range: 33 - 18 = 15

To check for outliers: 15*1.5 = 22.5

22 (median)

3318

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Class Work / Homework

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