Measures of Center Sigma- A symbol for sum. ∑ Summation Notation- The use of the sigma symbol to represent a summation. Also called sigma-notation or.

Slides:

Advertisements

Similar presentations

Measures of Central Tendency

Advertisements

Mean, Median, Mode & Range. Mean, Median, Mode are all types of average. An average summarises groups of data.

Mean, Median, Mode, and Range. Mean Mean: Average 1)First, order the numbers from least to greatest. 2)Next, add the numbers in the data set. 3)Then,

The following are a list of ages of players on a baseball team: Please make a dot-plot of these ages.

Central Tendency Mean – the average value of a data set. Add all the items in a data set then divide by the number of items in the data set.

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

Measures of Central Tendency

Measures of Central Tendency

Mean Median Mode and Range

Measures of Central Tendency Jan Sands 2007 Mean, Median, Mode, Range.

Mean Median Mode Range by: courtney widmer. MEAN definition: the average of a set of data steps 1 add numbers 2 count numbers 3 divide the number of numbers.

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.

Measures Of Central Tendency “AVERAGES”. Measures Of Central Tendency In finding the single number that you felt best described the position at which.

Measures of Central Tendency Mode Median Mean. The Mode the value or property that occurs most frequently in the data.

Mode Mean Range Median WHAT DO THEY ALL MEAN?.

How do we construct a box plot?

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

0-12 Mean, Median, Mode, Range and Quartiles Objective: Calculate the measures of central tendency of a set of data.

Statistics Assumed you have had this in previous math classes…

Dividing Decimals; Average, Median, and Mode

Table of Contents 1. Standard Deviation

Mean, Median, Mode & Range. Mean A number that represents the centre, or average, of a set of numbers; to find the mean, add the numbers in the set, then.

Chapter 1: Exploring Data Lesson 3: Measures of Center Mrs. Parziale.

Mean, Median, and Mode 3.1 Measures of Central Tendency.

Median Median is the middle number in a data set when the data are arranged in numerical order. If you have an even number of data items, add the two middle.

Mean: The AVERAGE values of a set of numbers. The mean is found by ADDING all of the values, then DIVIDING by the number of values in the set of data.

(7.12) Probability and statistics The student uses measures of central tendency and range to describe a set of data. The student is expected to: (A) describe.

1.6 Mean, Median, Mode.

Measures Of Central Tendency

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.

7.3 Measures of Central Tendency and Dispersion. Mean – the arithmetic average is the sum of all values in the data set divided by the number of values.

The number which appears most often in a set of numbers. Example: in {6, 3, 9, 6, 6, 5, 9, 3} the Mode is 6 (it occurs most often). Mode : The middle number.

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.

Central Tendency Mean – the average value of a data set. Add all the items in a data set then divide by the number of items in the data set.

Measures of Central Tendency. The Big Three – Mean, Median & Mode Mean Most common measure Arithmetic average Statistical symbols PopulationSample μ Nn.

Bell Ringer What does the word “average” mean in math?

Statistical Measures M M O D E E A D N I A R A N G E.

Unit Three Central Tendency.

Measures of Central Tendency

Starter Questions.

Mode Mean Range Median WHAT DO THEY ALL MEAN?.

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 Average often means the ‘mean’

Measures of Central Tendency & Range

Mean, Median, Mode, and Range

Measures of Central Tendency & Center of Spread

Stem & Leaf Plots How to make a Stem & Leaf Plot.

Mean: average 2. Median: middle number 3. Mode: most often

Decimal Applications : Mean, Median, and Mode

Measures of Central Tendency

Measures of Central Tendency (Mean, Median, & Mode)

Measures of Central Tendency

Making Sense of Measures of Center Investigation 2

Mean, Median, Mode & Range

Mean, Median, Mode & Range

Measures of Central Tendency

Penalty shooting competition

Find Mean, Median, Mode, Range given a data set.

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.

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.

14.2 Measures of Central Tendency

Grade 12 Essential Math Measurement and Statistics

ALGEBRA STATISTICS.

Stem & Leaf Plots How to make a Stem & Leaf Plot.

Chapter 5 – 9 Measure of Central Tendency

Averages Handling Data.

Presentation transcript:

Measures of Center

Sigma- A symbol for sum. ∑ Summation Notation- The use of the sigma symbol to represent a summation. Also called sigma-notation or ∑-notation. Mean- Average of the data set. Median- Middle value of the data set. Mode- Value of the data set that appears most often. Measures of Center- The mean and median of a data set. Also known as measures of central tendency. Extremes- Outlier values in a data set that can distort the mean.

X 1 =12 X 2 =15 X 3 =18 X 4 =21 X 5 =24 X 6 =27 4 ∑ X i = X 1 +X 2 +X 3 +X 4 = = 66 i=1 Number below the sigma symbol- First value of summation Number above the sigma symbol- Last value of summation

X 1 =23 X 2 =24 X 3 =27 X 4 =31 X 5 =32 X 6 =37 5 ∑ X i = i=2

Mean- Add up all values, divide by number of values. __ X = mean Median- Middle value of data set. Put numbers in order smallest to largest, then find the number in the middle. Mode- Value that appears most often.

Mean? Median? Mode?

Worksheet 1-3