Aim: How do we analyze data? The mean is the arithmetic average of a group of numbers. Find the mean of a group of numbers Step 1: Add all the numbers.

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Presentation transcript:

Aim: How do we analyze data? The mean is the arithmetic average of a group of numbers. Find the mean of a group of numbers Step 1: Add all the numbers. 7, 11, 12, 18, 23, = 96 Step 2: Divide the sum by the number of items. 96 ÷ 6 = 16 The mean is 16. Mean

Aim: How do we analyze data? Calculate the mean of the numbers below. Round to the nearest tenth place if necessary. 5, 12, 12, 28, 23, 31 4, 1, 7, 3, 1, 4, 8, 9, 9

Aim: How do we analyze data? The median is the middle number in a set of ordered numbers. Find the median of a group of numbers. Step 1: Arrange the numbers from least to greatest. 20, 19, 23, 18, 26 18, 19, 20, 23, 26 Step 2: Find the middle number. The median is , 19, 20, 23, 26 Median

Aim: How do we analyze data? If there are two middle numbers, how do I find the median? 18, 19, 30, 34, 36, 39 The median is 32. Step 3: Find the mean of the two middle numbers = ÷ 2 = 32

Aim: How do we analyze data? Calculate the median of the numbers below. Round to the nearest tenth if necessary. 33, 12, 12, 28, 31 28, 15, 11, 3, 32, 40

Aim: How do we analyze data? The mode is the number that appears most frequently in a set of numbers. Find the mode of a group of numbers. Step 1: Arrange the numbers from least to greatest. 20, 19, 26, 18, 26 18, 19, 20, 26, 26 Step 2: Find the number that is repeated the most. The mode is , 19, 20, 26, 26 Mode

Aim: How do we analyze data? Calculate the mode of the numbers below. 5, 12, 12, 28, 23, 12 4, 1, 7, 4, 1, 9, 8 8, 3, 2, 1, 5, 9, 7

Aim: How do we analyze data? Calculate the mode of the numbers below. The range tells how far apart the greatest and least numbers in a set are. Find the range of a group of numbers. 250, 300, 925, 500, 15, 600 Step 1: Find the greatest and least values. 925 and 15 Step 2: Subtract the least value from the greatest value = 910 The range is 910. Range

Aim: How do we analyze data? Calculate the mean, median, mode AND range, of the numbers below. 12, 4, 6, 8, 3, 6 6, 1, 7, 4, 1, 4, 0, 9 mean median mode range 3, 9, 7, 2, 3, 5, 6, 0

Aim: How do we analyze data? 1) Every day at 7am, Tamara recorded the outside temperature in degrees Fahrenheit( o F). She placed the data for one week in the table below. (2008) Day Temperature Monday 58 Tuesday 48 Wednesday 49 Thursday 61 Friday 58 Saturday 51 Sunday 39 What is the range for the temperatures given in the table?

Aim: How do we analyze data? 2) The annual salaries of the employees working at Kevin's restaurant are listed below? (2007) $21, $33, $18, $22, $30, $47, $37, $46, What is the range for these salaries? 3) Lavonda learned to ride a unicycle. She practiced riding the unicycle for 25 minutes on Monday, 10 minutes on Tuesday, 22 minutes on Wednesday, 31 minutes on Thursday and 13 minutes on Friday. (2006) What is the range for the data?

Aim: How do we analyze data? 4) Calculate the mean and mode of the example below. Score Frequency

Aim: How do we analyze data? 5) 6)

Aim: How do we analyze data? 7) A marine biologist records the following locations of 6 deep sea jellyfish in relation to the ocean surface: feet, feet, feet, feet, feet, and feet. What is the mean location of the deep sea jellies?