Warm Up Problem Find the mean, median, and mode:

Slides:

Advertisements

Similar presentations

MEASURES OF CENTRAL TENDENCY Measures of central tendency try to describe what we refer to as the center of the data.

Advertisements

By the end of this lesson you will be able to explain/calculate the following: 1. Mean 2. Median 3. Mode.

Mean, Median, Mode and Range Lesson 2-6 and 2-7. Mean The mean of a set of data is the average. Add up all of the data. Divide the sum by the number of.

6-5 Data Distributions Objective

Materials Reminders. Get out your agenda if you see your name below. You need to come to my room tomorrow. Period 2Period 7.

Warm Up. Lesson 48, Analyzing Measures of Central Tendency Probability and Statistics.

Lesson 5-8 Pages Measures of Central Tendency Lesson Check 5-7.

Tuesday, November 08, 2011 Instructor: Mr. Johnson.

Warm Up – Find the mean, median & mode of each set. Data Set I Data Set II.

Mean, Median, Mode and Range

5 Minute Check Find the mean, median and mode for each data set. Complete in your notebook , 85, 92, , 71, 73, 64, 67, 71, , 62,

PRE-ALGEBRA. Lesson 12-1 Warm-Up PRE-ALGEBRA Mean, Median, and Mode (12-1) measure of central tendency: a measure that tells us where the middle of a.

Using Integers with Mean, Median, and Mode COURSE 3 LESSON 1-6 The prices of new books bought for the library are in dollars below. How does the outlier.

Lesson Menu Main Idea and New Vocabulary Key Concept:Using Mean, Median, and Mode Example 1:Choose an Appropriate Measure Example 2:Choose the Appropriate.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes Course 2.

Measures Of Central Tendency

Mean, Median, Mode, and Range

8-2 Measures of Central Tendency and Range. Measure of Central Tendency  A number used to describe the center of a set of data  Mean, Median, Mode.

Mean, Median, and Mode Lesson 7-1. Mean The mean of a set of data is the average. Add up all of the data. Divide the sum by the number of data items you.

Introductory Statistics Lesson 2.3 A Objective: SSBAT find the mean, median, and mode of data. Standards: M11.E

Measures of Center and Absolute Mean Deviation Some old, some new……

definitions Data set: Data Value: Measure of Central Tendency: A group of related facts expressed as numbers. One of the entries of the data set. A single.

Statistics Unit Test Review Chapters 11 & /11-2 Mean(average): the sum of the data divided by the number of pieces of data Median: the value appearing.

Analyzing Statistics Core Focus on Ratios, Rates & Statistics Lesson 4.6.

Data Analysis Goal: I can use shape, center, and the spread to describe characteristics of the data set. I can understand the effects of outliers on a.

Warm Up Order the numbers from least to greatest. 1. 7, 4, 15, 9, 5, 2

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

12-3 Measures of Central Tendency and Dispersion

Warm Up 5, 4, 6, 8, 7, 4, 6, 5, 9, 3, 6 Mean = 2. Median = 3. Mode =

Introduction To compare data sets, use the same types of statistics that you use to represent or describe data sets. These statistics include measures.

Statistics Unit Test Review

Appropriate Measures & Extra Mean, Median, Mode, Range Practice

Warm Up Order the numbers from least to greatest. 1. 7, 4, 15, 9, 5, 2

Definition Mean Mean – the average of a group of numbers. 2, 5, 2, 1, 5 Mean = 3.

Mean, Median, Mode, and Range

Ticket in the Door Find the mean, median and mode of the data.

Mean, Median, Mode, and Range

Warm Up Problem Ms. Chen is buying pencils for her class. Each pencil costs $0.20. What is the cost if she buys 24 pencils?

Mean, Median, and Mode Course

11.1 Measures of Center and Variation

Remember the 3 Ms? Mean, Median, and Mode ~Central Tendency~

are two in the middle, find their average.

Warm-up 8/25/14 Compare Data A to Data B using the five number summary, measure of center and measure of spread. A) 18, 33, 18, 87, 12, 23, 93, 34, 71,

Measures of Central Tendency

are two in the middle, find their average.

The absolute value of each deviation.

Warm Up Problem Which equation represents the function?

Main Idea and New Vocabulary Key Concept: Measures of Central Tendency

9-4 Variability Warm Up Problem of the Day Lesson Presentation

Making Sense of Measures of Center Investigation 2

Drill Put these numbers in order from least to greatest: {-2, 6, 3, 0, -5, 1, -8, 8} b) Add the #’s together.

Additional Data and Outliers

Remember the 3 Ms? Mean, Median, and Mode ~Central Tendency~

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

Main Idea and New Vocabulary Example 1: Find the Mean

Measures of Central Tendency

Warm-Up Please draw a dot over the number of siblings you have. For example: If you have 3 siblings, place a dot over 3.

Lesson 1 Exploring Measures of center and spread

Review Check to see if the ordered pair is a solution or not to X + y < -1 (-3,-1) (0,2) Solve and graph 2x + 3y > 12.

Measures of Central Tendency

13.1 Central Tendencies Objective: Students will be able to identify the mean, median, and mode given a data set. They will also be able to identify what.

Mean, Median, Mode, and Range

Core Focus on Linear Equations

Measures of Central Tendency

Bell Work – Range, Measures of Center, and Dot Plot

Warm Up Problem Rectangle QRST has vertices Q(3, 2), R(3, 8), S(7, 8), and T(7, 2). What is the perimeter of rectangle QRST?

Math 341 January 24, 2007.

Additional Data and Outliers

Presentation transcript:

Warm Up Problem Find the mean, median, and mode: 55, 54, 56, 60, 58, 60, 52, 53

Appropriate Measures Lesson 11-5

Objectives I can determine the appropriate measure of center.

Notes Measure Most appropriate when… Mean the data have no outliers. Median the data have outliers. OR there are no big gaps in the middle. Mode data have many repeated numbers.

Example 1 The table shows the number of medals won by the U.S. Which measure of center best represents the data? Find the measure of center. Since the data has no extreme values or repeated #s, mean is the best to represent the data. Mean: 112 + 101 + 97 + 103 + 110 = 523 523 ÷ 5 = 104.6

Example 2 The table shows the water temperature over several days. Which measure of center best represents the data? Find the measure of center. In the set of data, there are no extreme values. There is a temperature repeated four times, so mode is the best measure of center. Mode: 82

Got It? 1. The prices of several DVDs are $22.50, $21.95, $25.00, $21.95, $19.95, $21.95, $21.50. Which measure of center best represents the data? Find the measure of center.

Example 3 The table shows the average life spans of some animals. Identify the outlier in the data set. Compared to the other values, 200 is extremely high. 200 is the outlier.

Example 4 Determine how the outlier affects the mean, median, and mode of the data. With the outlier: Mean: 62 Median: 35 Mode: 30 Without the outlier: Mean: 39 Median: 32.5 The mean is much bigger, the median is slightly bigger, but the mode stays the same with the outlier.

Example 5 Which measure of center best describes the data? Justify your selection. Mean: The mean changed too much. Median: The median changed a little. Mode: There are only 2 numbers repeated. The median is the best representative of this data.

Got It? 2. The prices of some new athletic shoes are shown in the table. Identify the outlier. Determine how the outlier affects the mean, median, and mode. Tell which measure of center best describes the data.

How can an outlier affect it? In summary… Measure of Center How can an outlier affect it? Mean Median Mode DRASTICALLY! An outlier can lower or raise the mean significantly. Not that much…an outlier can lower or raise the median, but only slightly. Not at all…an outlier never affects the mode.