Statistics Chapter 12

Description

for NBCC Statistics ii course
Bradford Richard
Quiz by Bradford Richard, updated more than 1 year ago
Bradford Richard
Created by Bradford Richard about 8 years ago
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Resource summary

Question 1

Question
When we study the relationship between two variables we refer to the data as
Answer
  • Tri-variate
  • regression
  • dependant variable
  • b-variate

Question 2

Question
A _______ diagram is a chart that portrays the relationship between two variables.
Answer
  • Scatter
  • Line
  • X-Y
  • Grid

Question 3

Question
DEPENDENT VARIABLE
The variable that is being predicted or estimated. It is scaled on the
Answer
  • b variable
  • a variable
  • Y-Axis
  • X-Axis

Question 4

Question
INDEPENDENT VARIABLE
The variable that provides the basis for estimation. It is the predictor variable.
It is scaled on the
Answer
  • a variable
  • b variable
  • Y-Axis
  • X-Axis

Question 5

Question
In ________ _________ we use the independent variable (X) to estimate the dependent variable (Y):
Answer
  • Regression Analysis
  • Confidence Interval
  • Coefficient of Correlation
  • Coefficient of Determination

Question 6

Question
An equation that expresses the linear relationship between two variables.
Answer
  • Regression Equation
  • Bi-variate Equation
  • Coefficient of correlation Equation
  • Coefficient of determination Equation

Question 7

Question
Determining a regression equation by minimizing the sum of the squares of the vertical distances between the actual Y values and the predicted values of Y is known as the...
Answer
  • Least squares principle
  • standard error of estimate
  • confidence interval
  • prediction interval

Question 8

Question
__ is the predicted value of theY variable for a selected X value.
Answer
  • Y'
  • ß
  • Se
  • r

Question 9

Question
is the Y-intercept. It is the estimated value of Y when 
X = 0.
Answer
  • a
  • b
  • X
  • Y'

Question 10

Question
___ is the slope of the line, or the average change in Y' for each change of one unit (either increase or decrease) in the independent variable, X. 

Answer
  • a
  • b
  • Y'
  • X

Question 11

Question
_____________ measures the scatter, or dispersion, of the observed values around the line of regression.
Answer
  • standard error of estimate
  • prediction interval
  • Coefficient of correlation
  • Coefficient of determination

Question 12

Question
We model the linear relationship in the population by the equation:
Answer
  • Y=a+b
  • Y'=a+bx
  • Yʹ′±tSe
  • X=Y'-b
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