SECTION 3.2:
Measures of Variation
RANGE, DEVIATION, VARIANCE, STANDARD DEVIATION
Measures of variation give an indication of how spread out the data is.
Notation Used For Variance and Standard Deviat
SECTION 3.3:
Measures of Position (or Relative Standing)
Quartiles, Percentiles
Fractiles are numbers that partition or divide and ordered data set into equal parts.
THREE QUARTILES:
Q1 , Q2 , Q3
Appr
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Brad Harwood
Professor Tobin F. Terry
ENGL 1135
17 July, 2017
My love for Baseball
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yesterday. My dad, placing m
Harwood 1
Brad Harwood
Professor Tobin F. Terry
ENGL 1135
27 July, 2017
The most interesting man in the world
I do not have a name, but my story tells the tale. Growing up, i thought i had a
gift, som
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Chapter 14 Test 1 Notes
In the general multiple regression equation, which of the following variables represents
the Y-intercept?
A
If there are four independent variables in a multiple regression e
Chapter 14 Test Notes 5
A variable that can assume only one of two possible outcomes that take on the values of
either 0 or 1, and is used to incorporate the effect of qualitative variables in a regre
Chapter 14 Test Notes 7
Stepwise regression analysis is a method that assists in selecting the most significant
variables for a multiple regression equation.
True
A researcher is studying the relatio
Chapter 14 Test Notes 6
Interaction occurs when the relationship between an independent variable and a
dependent variable is affected by another independent variable.
True
A multiple regression model
Chapter 14: Evaluating the Assumptions of Multiple Regression
If the points on a scatter diagram seem to be best described by a curving line, which one
of the regression assumptions might be violated?
Chapter 14. Evaluating a Multiple Regression Equation
How are the coefficients found for a multiple regression equation?
By the least squares method using a statistical software package
Match Variabl
Inferences in Multiple Linear Regression
Match the terms to their description
t = the t-distribution
" = the ith coefficient
$% = standard deviation of the distribution of "
Given in the software
Chapter 14: Multiple Regression Analysis
Match Variables
= the predicted dependent variable
a = the intercept
Bn = a coefficient
Xn = the independent variable
How are the coefficients found for a
Chapter 14: Introduction
Match Variables
= the predicted dependent variable
a = the intercept
Bn = a coefficient
Xn = the independent variable
How are the coefficients found for a multiple regress
Chapter 14: Stepwise Regression
Match Variables
= the predicted dependent variable
a = the intercept
Bn = a coefficient
Xn = the independent variable
How are the coefficients found for a multiple
Chapter 14: Regression Models with Interaction
How are the coefficients found for a multiple regression equation?
By the least squares method using a statistical software package
Match Variables
= t
Chapter 14. Qualitative Independent Variables
What is a dummy variable in the context of regression analysis?
A qualitative variable that has been replaced by a number, usually 0 or 1
How are the coe
Alien Juice Bar Lab
The purpose of this lab is to determine whether common household substances are acidic,
basic, or neutral. You will need to access a website as this is a virtual lab. In addition t
Nonparametric tests require no assumptions about the shape of the population distribution.
True
False
The sample proportion is defined as _.
rev: 03_01_2016_QC_CS-43899
n
X/n
n!
If 20 out of 50 studen
To test the null hypothesis that a set of sample data is normally distributed, we compare an
expected normal distribution of the data to an observed distribution of the data.
True
False
To test if an
Which of the following statements is correct regarding the goodness-of-fit
test?
Variables are based on the nominal measurement scale.
Population must be normal.
All the expected frequencies must be e
The following table classifies 100 individuals using two variables, gender and college attended.
What is this two-way classification called?
Goodness-of-fit test
Frequency table
ANOVA table
Contingenc
If we are testing the difference between two population proportions, it
is assumed that the two populations are approximately normal and have
equal variances.
True
False
pool the
In testing the differ
The chi-square statistic _.
Is greater than or equal to zero
Is less than or equal to zero
Can be any value
Is equal to zero
The computed chi-square value is positive because the difference between
th
MC Qu. 18 A valid multiple regression analysis assumes.
A valid multiple regression analysis assumes or requires that _.
rev: 01_19_2016_QC_CS-38007
The dependent variable is measured using an ordinal
TF Qu. 12 Stepwise regression analysis is a method tha.
Stepwise regression analysis is a method that assists in selecting the most significant
variables for a multiple regression equation.
True
False
MC Qu. 76 A variable that can assume only one of two p.
A variable that can assume only one of two possible outcomes that take on the values
of either 0 or 1,
and is used to incorporate the effect of