Business Stats Final: Straighterline
Exam/Questions with Verified answers
Which of the following is a qualitative variable type? - -ANSWER--Discrete
Continuous
Both of the above
# None of the above
What would be an example of a quantitative variable? - -ANSWER--The net pay on your
paycheck
The temperature outside
Your weight
# All of the above
What is the highest level of measurement for a variable? - -ANSWER--Ratio
Your compensation has increased steadily in the last few years. At the same time, the
number of homeless people in the United States has also increased. What is this an
example of? - -ANSWER--Association
A sampling technique where an item can be chosen only once from a population is
called - -ANSWER--Sampling without replacement.
, A range of values that is likely to hold the mean of the data is __________. - -
ANSWER--Confidence Interval
To compute a proportion, you divide the number of successes by __________. - -
ANSWER--The number of total trials.
The smaller the allowable error, the ______ the sample. - -ANSWER--Larger
The variable that is used to predict another variable in the regression equation is called
the ________. - -ANSWER--Independent Variable
The coefficient of determination is computed by dividing the sum of squares regression
(SSR) divided by what? - -ANSWER--Sum of squares total (SS)
When two variables are moving in the same direction, they have a(n) ___________
relationship. - -ANSWER--Direct
What is the average change in the dependent variable for each one unit change in the
independent variable called? - -ANSWER--y-intercept
Predicted value of the dependent variable
x-intercept
# None of the above
The coefficient of correlation is the square root of what? - -ANSWER--The coefficient of
determination
y-intercept is the value of y when the value of x is ________. - -ANSWER--0
The situation when the difference between an estimate of the dependent variable and
its actual value is approximately the same for all observations is called _________. - -
ANSWER--Homoscedasticity
In ANOVA analysis, the degrees of freedom equals ___________. - -ANSWER--
Degrees of freedom are the number of observations minus 1.
When testing a hypothesis, you reject the $1 hypothesis. What is the next step? - -
ANSWER--Accept the alternative hypothesis.
When using Excel to perform regression analysis, you choose from the menu, Tools,
Data Analysis, and __________. - -ANSWER--Regression
A scatter diagram where the data points go up as you move to the right on the X axis
indicates _________. - -ANSWER--A positive correlation
Exam/Questions with Verified answers
Which of the following is a qualitative variable type? - -ANSWER--Discrete
Continuous
Both of the above
# None of the above
What would be an example of a quantitative variable? - -ANSWER--The net pay on your
paycheck
The temperature outside
Your weight
# All of the above
What is the highest level of measurement for a variable? - -ANSWER--Ratio
Your compensation has increased steadily in the last few years. At the same time, the
number of homeless people in the United States has also increased. What is this an
example of? - -ANSWER--Association
A sampling technique where an item can be chosen only once from a population is
called - -ANSWER--Sampling without replacement.
, A range of values that is likely to hold the mean of the data is __________. - -
ANSWER--Confidence Interval
To compute a proportion, you divide the number of successes by __________. - -
ANSWER--The number of total trials.
The smaller the allowable error, the ______ the sample. - -ANSWER--Larger
The variable that is used to predict another variable in the regression equation is called
the ________. - -ANSWER--Independent Variable
The coefficient of determination is computed by dividing the sum of squares regression
(SSR) divided by what? - -ANSWER--Sum of squares total (SS)
When two variables are moving in the same direction, they have a(n) ___________
relationship. - -ANSWER--Direct
What is the average change in the dependent variable for each one unit change in the
independent variable called? - -ANSWER--y-intercept
Predicted value of the dependent variable
x-intercept
# None of the above
The coefficient of correlation is the square root of what? - -ANSWER--The coefficient of
determination
y-intercept is the value of y when the value of x is ________. - -ANSWER--0
The situation when the difference between an estimate of the dependent variable and
its actual value is approximately the same for all observations is called _________. - -
ANSWER--Homoscedasticity
In ANOVA analysis, the degrees of freedom equals ___________. - -ANSWER--
Degrees of freedom are the number of observations minus 1.
When testing a hypothesis, you reject the $1 hypothesis. What is the next step? - -
ANSWER--Accept the alternative hypothesis.
When using Excel to perform regression analysis, you choose from the menu, Tools,
Data Analysis, and __________. - -ANSWER--Regression
A scatter diagram where the data points go up as you move to the right on the X axis
indicates _________. - -ANSWER--A positive correlation
