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Lecture 3 Summer Semester 2009

Lecture 3 Summer Semester 2009. BEA 140 By Leon Jiang. Some points more for univariate data. Central tendency. Mean Median Mode. Variance. Population: ? 2 = ( ? X i 2 - ( ? X i ) 2 /N ) / N Sample: s 2 = ( ? X i 2 - ( ? X i ) 2 /n ) / (n-1). Standard deviation.

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Chapter 3

Chapter 3. Data Description. Chapter 3 Overview. Introduction 3-1 Measures of Central Tendency 3-2 Measures of Variation 3-3 Measures of Position 3-4 Exploratory Data Analysis. Chapter 3 Objectives. Summarize data using measures of central tendency.

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Statistics

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Section 3-2

Chapter 3 Data Description. Section 3-2. Measures of Central Tendency. Chapter 3 Data Description. Section 3-2. Exercise #3. 1, 2, 3, 3, 7, 11, 18, 30, 61. MD:. MD: 7. MD: 1, 2, 3, 3, 7, 11, 18, 30, 61. Chapter 3 Data Description. Section 3-2. Exercise #5.

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Chapter 2

Chapters 1. Introduction 2. Graphs 3. Descriptive statistics 4. Basic probability 5. Discrete distributions 6. Continuous distributions 7. Central limit theorem 8. Estimation 9. Hypothesis testing 10. Two-sample tests 13. Linear regression

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Graphs with SPSS

Graphs with SPSS . Aravinda Guntupalli. Bar charts. Bar Charts are used for graphical representation of Nominal and Ordinal data Height of the bar is proportional to the number of values in the category. Select the icon for the chart type you want, and select the option under Data.

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BCOR 1020 Business Statistics

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Exercises on Measures of Central Tendency

Exercises on Measures of Central Tendency. Enter. There are seven multiple-choice questions in this exercise. Click the letter to select the corresponding answer. Enter. Age. Frequency. 11. 7. 12. 19. 13. 10. 14. 4.

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Welcome to the Quantitative Analysis (Statistics/EXCEL) Module

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ARITHMETIC MEAN, MEDIAN & MODE

ARITHMETIC MEAN, MEDIAN & MODE. Presented By: ABID NAWAZ MERANI ABDULLAH OVAIS FARZAH SIDDIQUI SOAIYBA JABEEN AHMED B USINESS S TARS. INTRODUCTION TO ARITHMETIC MEAN. Given By: Abid Nawaz Merani. The raw data given below show the scores of an Australian Batsman of his last 30 matches.

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MEASURES of

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Measures of Central Tendency Descriptive Statistics Part 1

Measures of Central Tendency Descriptive Statistics Part 1. Cal State Northridge ? 320 Andrew Ainsworth PhD. What is a typical score like?. There are three indices of this central tendency: Mode Median Mean. Measures of Central Tendency. Mode: most common (frequent) number

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PROJECT ON STATISTICS

PROJECT ON STATISTICS. Viju Thomas Sridhar Srikanth A.

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CHAPTER 3 : DESCRIPTIVE STATISTIC : NUMERICAL MEASURES (STATISTICS)

CHAPTER 3 : DESCRIPTIVE STATISTIC : NUMERICAL MEASURES (STATISTICS). DESCRIPTIVE STATISTICS : NUMERICAL MEASURES (STATISTICS ). 3.1 Measures of Central Tendency Gives the center of a histogram or a frequency distribution curve. 3.1.1 Different measures of central tendency i. Mean

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Example 1. The number of goals scored by a team in 20 games are given below :

Mean from a Frequency Table. Calculating the Mean : If there are large amounts of data, it is easier if it is displayed in a frequency table. Example 1. The number of goals scored by a team in 20 games are given below :

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Example 1.

Mean from a Frequency Table. Calculating the Mean : If there are large amounts of data, it is easier if it is displayed in a frequency table. Example 1. The number of goals scored by Premier League teams over a weekend was recorded in a table. Calculate the mean and the mode. Goals x.

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Measures of Central Tendency

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Statistical Measures 1

Statistical Measures 1. Measure of Central Tendency. Intro. Grouped Data.

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