Shape, Center, Spread.

Slides:

Advertisements

Similar presentations

Histograms Bins are the bars Counts are the heights Relative Frequency Histograms have percents on vertical axis.

Advertisements

Chapter 1 review “Exploring Data”

Introduction to Summary Statistics

B a c kn e x t h o m e Parameters and Statistics statistic A statistic is a descriptive measure computed from a sample of data. parameter A parameter is.

Homework Questions. Quiz! Shhh…. Once you are finished you can work on the warmup (grab a handout)!

2.2 Measures of Central Tendency Skewing distributions.

Univariate Data Chapters 1-6. UNIVARIATE DATA Categorical Data Percentages Frequency Distribution, Contingency Table, Relative Frequency Bar Charts (Always.

Table of Contents 1. Standard Deviation

Section 1 Topic 31 Summarising metric data: Median, IQR, and boxplots.

Measures of Central Tendency And Spread Understand the terms mean, median, mode, range, standard deviation.

1)Construct a box and whisker plot for the data below that represents the goals in a soccer game. (USE APPROPRIATE SCALE) 7, 0, 2, 5, 4, 9, 5, 0 2)Calculate.

DATA MANAGEMENT MBF3C Lesson #5: Measures of Spread.

Homework Questions. Measures of Center and Spread Unit 5, Statistics.

7.3 Find Measures of Central Tendency and Dispersion p. 259.

Normal Distribution. Normal Distribution: Symmetric: Mean = Median = Mode.

Analyzing the shape of Data By: Nigel N., Ivory R., Natalie S.

Summary Statistics and Mean Absolute Deviation MM1D3a. Compare summary statistics (mean, median, quartiles, and interquartile range) from one sample data.

2.3 Measures of Central Tendency measure of central tendency - mean - population mean:sample mean: median - mode -

ANALYZING THE SHAPE OF DATA (CC-37) PURPOSE: TO CHOOSE APPROPRIATE STATISTICS BASED ON THE SHAPE OF THE DATA DISTRIBUTION. ADRIAN, KARLA, ALLEN, DENISSE.

1.6 Mean, Median, Mode.

Measures Of Central Tendency

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.

BOX AND WHISKER PLOTS Unit 8 – M1F. Warm – Up!! ■As you walk in, please pick up your calculator and begin working on the warm –up! 1.Using the data to.

COMPUTATIONAL FORMULAS AND IQR’S. Compare the following heights in inches: BoysGirls

4.1 Measures of Center We are learning to…analyze how adding another piece of data can affect the measures of center and spread.

Number of hurricanes that occurred each year from 1944 through 2000 as reported by Science magazine Histogram Dot plot Box plot.

Economics 111Lecture 7.2 Quantitative Analysis of Data.

SECONDARY MATH Normal Distribution. Graph the function on the graphing calculator Identify the x and y intercepts Identify the relative minimums.

Interpreting Categorical and Quantitative Data. Center, Shape, Spread, and unusual occurrences When describing graphs of data, we use central tendencies.

© 1999 Prentice-Hall, Inc. Chap Measures of Central Location Mean, Median, Mode Measures of Variation Range, Variance and Standard Deviation Measures.

ZI0CNHLS Measures of Central Tendency.

Describing Distributions

Shape of Data Distribution and Interpreting Line Graphs

Mean, Median, Mode and Standard Deviation (Section 11-1)

Chapter 5 : Describing Distributions Numerically I

6th Grade Math Lab MS Jorgensen 1A, 3A, 3B.

(12) students were asked their SAT Math scores:

CHAPTER 1 Exploring Data

Notes Over 7.7 Finding Measures of Central Tendency

Warmup What five numbers need to be mentioned in the complete sentence you write when the data distribution is skewed?

Measures of Central Tendency

are two in the middle, find their average.

Unit 7. Day 13..

Descriptive Statistics: Describing Data

Quartile Measures DCOVA

The absolute value of each deviation.

SWBAT: Measure center with the mean and median and spread with interquartile range. Do Now:

Unit 7. Day 12..

One Quantitative Variable: Measures of Spread

Means & Medians.

Describing Quantitative Data with Numbers

Unit 1: Inference and Conclusions from Data

Making Sense of Measures of Center Investigation 2

AP Statistics Day 4 Objective: The students will be able to describe distributions with numbers and create and interpret boxplots.

Chapter 1: Exploring Data

Describing Distributions

Adapted from Ms. Namad.

Histograms and Measures of Center vs. Spread

Vocabulary for Feb. 20-Mar

MCC6.SP.5c, MCC9-12.S.ID.1, MCC9-12.S.1D.2 and MCC9-12.S.ID.3

Numerical Descriptive Measures

MBA 510 Lecture 2 Spring 2013 Dr. Tonya Balan 4/20/2019.

Describing Quantitative Distributions

The Five-Number Summary

Describing Distribution

Describing Distributions with Numbers

Grade 12 Essential Math Measurement and Statistics

Univariate Data Univariate Data: involving a single variable

Describing Data Coordinate Algebra.

7.3 Find Measures of Central Tendency and Dispersion

Presentation transcript:

Shape, Center, Spread

The distribution of a set of data describes the arrangement of data values Can be described by: Shape Center Spread

Shape

Examples A. B. Skewed right Symmetric C. D. Skewed right Symmetric

Center What is the center? What is it called? 80, Median Other ways to find center: Mean, Mode These are called MEASURES OF CENTRAL TENDENCY They tell us the EXPECTED MIDDLE VALUE for the data set In general… • IF the data is symmetric, the MEAN is the best measure of central tendency. • IF the data is skewed left or right, the MEDIAN is the best measure of central tendency.

Spread Spread refers to HOW FAR APART the data is How can we find this information out? STANDARD DEVIATION, IQR, RANGE What is the range of this data: 35 What is the IQR: 20

In summary Symmetric Distribution Skewed Distribution Measure of Center Mean Median Measure of Spread Standard Deviation IQR/Range