Question

Select the statement that is **true**.

The independent variable is only used in the independent t-test and the dependent variable is only used in the dependent t-test. |
||

The independent t-test is never used in a calculation with more than two groups or sets of data. |
||

Independent means that the independent t-test is not related to any other type of t-test. |
||

The matched pairs t-test will usually have greater variance than the independent t-test when using the same variables. |

Answer #1

Since the Independent Samples t Test can only compare the means for two (and only two) groups. It cannot make comparisons among more than two groups. If you wish to compare the means across more than two groups, you will likely want to run an ANOVA.

So the correct statement is

"The independent t-test is never used in a calculation with more than two groups or sets of data."

Statement 1st is wrong since there is no dependent t Test.

Statement 3rd is also wrong because independent means that populations are different.

Statement 4th is also incorrect because we can have the variance less as well.

1) The standard t test for independent means should NOT
be used if the populations are highly __________ in opposite
directions.
2) For a study using a t test for independent means,
with any given total number of participants, power is greatest when
the participants are divided into __________ groups.
3)
In the formula “=
S2M1 +
S2M2,”
“S2M1”
represents
Group of answer choices
the variance of the difference scores for Population 1.
the estimated standard deviation of Population 1....

When we compute an independent-samples t-test, we are
looking to see if there are significant differences between the
means of two independent groups, each measured on a different level
of the independent variable.
True or False
When we compute a paired-samples t-test, we are looking
to see if there are significant differences between the means of
two independent groups, each measured on a different level of the
independent variable.
True or False
If the p-value is > than 0.05, the...

_____ is used to test the differences in the mean value of a
dependent variable among different groups defined by two or more
independent variables.

Which of the following statements are true concerning the mean
of the differences between two dependent samples? (matched pairs)?
Select all that apply. A. The methods used to evaluate the mean of
the differences between two dependent variables apply if one has 60
weights of men from Ohio and 60 weights of men from New York. B. If
one has more than 5 matched pairs of sample? data, one can consider
the sample to be large and there is no...

1. A confidence interval for the true slope b1 can never be used
to test if b1 is equal to 0. (True/ False)
2. The coefficient of determination is the percent of total
variation explained by the regression model. (True/ False)
3. The coefficient of determination can never be greater than 1.
(True/ False)
4. The predictor variable in regression analysis is referred to
as the independent variable. (True/ False)

Using designs with more than two levels of an independent
variable allows researchers to a. compare a placebo group to the
control and experimental groups. b. compare more than two kinds of
treatment in one study. c. accomplish all of the other
alternatives. d. compare two or more kinds of treatment with a
control group.
A two-way ANOVA means that the experimental design includes a.
two independent variables b. all of the above c. two dependent
variables d. two...

An independent t-test is used to test for:
Differences between means of groups containing different
entities when the sampling distribution is normal, the groups have
equal variances and data are at least interval.
Differences between means of groups containing different
entities when the data are not normally distributed or have unequal
variances.
Differences between means of groups containing the same entities
when the data are normally distributed, have equal variances and
data are at least interval.
Differences between means of...

QUESTION 1
The samples are necessarily considered a dependent when
a.
repeated measures are made on the same subjects
b.
both groups consist of males
c.
both groups consist of 8th grade pupils
d.
any of the above is true
QUESTION 2
Observations are dependent when
a.
the same subjects have been used for both sets of
observations
b.
subjects have been matched on some variable related to the
varialbe observed
c.
either of the above is true
d.
the...

1. What type of variable should the dependent variable be for an
ANOVA?
a.
Qualitative
b.
Discrete
c.
Continuous
d.
Binary
2. An independent variable for an ANOVA is this type of data
Continuous
Discrete
Qualitative
Replication
3. We use this type of data for a z-test.
a.
means
b.
proportions
c.
contingency table
d.
discrete
4. We want to determine if the percent of home runs hit by
left-handed batters is greater than that of right-handed batters.
What type...

1. T/F and explain: In simple linear regression there can be
only one independent and one dependent variable, but in multiple
regression there can be more than one independent variable and more
than one dependent variable.
.2. From regression, using you own words, define the Error
Term.
3. Why is it important to check for correlation between
independent variables in multiple regression?
4. Assume two of your right hand side variables are correlated.
What techniques are available to you to...

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