HW2 - Chapter 4. Looking at Data: Measures of Central...

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Chapter 4. Looking at Data: Measures of Central Tendency . Name: Class: Date: From Kiess and Green’s Statistical Concepts for the Behavioral Sciences, 4/e Assignment 4.1 The purpose of this assignment is to help you to become more comfortable in recognizing what each statistical symbol and formula in Chapter 4 represents. For each item in the table below, either the term, symbol, or definition is given. Complete the following table with the missing information. For example, for the term sample mean , provide the symbol and definition in the appropriate columns. It is best to complete this page without looking at your notes or textbook. Once you have completed it, refer back to your notes and textbook to verify you are correct. Term Symbol Definition (also include formula as appropriate) Sample mean Mdn None One of the three measures of central tendency covered in the textbook. It represents the most frequently occurring score. Σ SS Population mean This intermediate step is needed for finding the sum of the squared deviations. If you sum this and your work is correct, it will sum to zero.
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Chapter 4. Looking at Data: Measures of Central Tendency . Name: Class: Date: From Kiess and Green’s Statistical Concepts for the Behavioral Sciences, 4/e Assignment 4.2 Find the mean, median, and mode for each of the nine data sets given below. Set A X Set B X Set C X 5 5 15 3 5 35 1 5 20 4 1 25 2 0 30 5 25 Set D X Set E X Set F X 5 Steelers 12 3 Giants 10 1 Dolphins 11 4 Steelers 10 2 Packers 12 5 Patriots 11 3 Eagles 12 1 Steelers 10 4 Bills 11 2 Jets 164 Set G X Set H X Set I X 512 5 10 1023 2 10 0 9 10 99 12 10 701 6 10 653 8 10 7 10
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Chapter 4. Looking at Data: Measures of Central Tendency Name: Class: Date: From Kiess and Green’s Statistical Concepts for the Behavioral Sciences, 4/e Assignment 4.3 Using the data sets from Assignment 4.2, identify the measure of central tendency that you think is the best indication of a typical score for each data set. Explain your answer for each data set. Set Measure of Central Tendency Explanation A B C D E F G H I
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Chapter 4. Looking at Data: Measures of Central Tendency Name: Class: Date: From Kiess and Green’s Statistical Concepts for the Behavioral Sciences, 4/e Assignment 4.4 Of all of the calculations you will have to do for this class, none is more important than learning how to find the sum of the squared deviations, called the sum of squares ( SS ). For each data set below, find X , then find X X and ( ) 2 X X for each score. Use these values to find the SS for each data set. Set A X X X () 2 X X Set B X X X ( ) 2 X X Set C X X X ( ) 2 X X 5 50 15 3 30 25 1 10 10 4 40 15 2 20 30 Set D X X X 2 X X Set E X X X ( ) 2 X X Set F X X X ( ) 2 X X 5 50 12 3 30 10 1 10 12 4 40 10 2 20 12 5 50 10 3 30 12 1 10 10 4 40 12 2 20 10 Set G X X X 2 X X Set H X X X ( ) 2 X X Set I X X X ( ) 2 X X 6 6 10 6 6 10 5 5 10 7 13 10 7 5 10 5 7 10 7 10
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Chapter 4. Looking at Data: Measures of Central Tendency Name: Class: Date: From Kiess and Green’s Statistical Concepts for the Behavioral Sciences, 4/e Assignment 4.5 This assignment is to be completed with Assignment 4.4. After you have found the
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This note was uploaded on 03/15/2010 for the course PSYCHOLOGY 100B taught by Professor Firstenberg,i. during the Winter '10 term at UCLA.

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HW2 - Chapter 4. Looking at Data: Measures of Central...

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