How is an independent-measures design different from a study that makes inferences about the population mean from a sample mean? In an independent-measures design, there are two independent samples that are compared to one another. You just studied 20 terms!
What does an independent measures study use?
An independent-measures study uses
a separate group of participants to represent each of the populations or treatment conditions being compared
. The estimated standard error measures how much difference is expected, on average, between a sample mean difference and the population mean difference.
Which of the following is an example of an independent measures design?
An independent-measures study uses
a separate group of participants to represent each of the populations or treatment conditions being compared
. … The estimated standard error measures how much difference is expected, on average, between a sample mean difference and the population mean difference.
Why does a change in sample size have little or no effect on Cohen’s d in an independent measures t statistic?
Because the
increase
in sample sizes has little or no effect on effect size and the increase in sample variance causes a decrease in effect size, the combined effect will be a decrease in effect size. Why does a change in sample sizes have little or no effect on Cohen’s d in an independent-measures t statistic? c.
What are the basic characteristics of an independent measures or a between subjects research study?
O An independent-measures study
requires a separate sample for each of the treatments or populations being
O An independent-measures study requires each individual in each sample to be matched with a corresponding O An independent-measures study requires an observation on each individual in the sample before and after …
What is one strength and one limitation of using an independent samples design in this study?
By using an independent samples design, the researcher can avoid order effects – for example, the practice effect or the problem of boredom with the task. A limitation is that with
a small sample size of only 17 participants per group
, individual differences may affect the results.
What is an independent measure design?
Independent measures design, also known as between-groups, is
an experimental design where different participants are used in each condition of the independent variable
. This means that each condition of the experiment includes a different group of participants.
Is a small effect size good or bad?
A commonly used interpretation is to refer to effect sizes as
small
(d = 0.2), medium (d = 0.5), and large (d = 0.8) based on benchmarks suggested by Cohen (1988). … Small effect sizes can have large consequences, such as an intervention that leads to a reliable reduction in suicide rates with an effect size of d = 0.1.
What does effect size tell you?
Effect size is
a quantitative measure of the magnitude of the experimental effect
. The larger the effect size the stronger the relationship between two variables. You can look at the effect size when comparing any two groups to see how substantially different they are.
Does effect size matter if not significant?
Values that do not reach significance are worthless and should not be reported
. The reporting of effect sizes is likely worse in many cases. Significance is obtained by using the standard error, instead of the standard deviation.
What are the basic characteristics of an independent measures or a between subjects research study quizlet?
What are the basic characteristics of an independent-measures, or a between-subjects, research study? An independent-measures study
requires a separate sample for each of the treatments or populations being compared
. It is sometimes called a between-subjects design.
What is the correct null hypothesis for an independent measures t test?
The null hypothesis for an independent samples t-test is
that two populations have equal means on some metric variable
. For example, do men spend the same amount of money on clothing as women? We can’t reasonably ask the entire population of men and women how much they spend.
What is the defining characteristic of a repeated measures or within subjects research design?
The defining characteristic of a repeated-measure design is
that one group of individuals participates in all of the different treatment conditions.
What are the 4 types of research design?
There are four main types of Quantitative research:
Descriptive, Correlational, Causal-Comparative/Quasi-Experimental, and Experimental Research
. attempts to establish cause- effect relationships among the variables. These types of design are very similar to true experiments, but with some key differences.
What is an advantage of using independent groups design?
Advantages of independent measures design include
less time/money involved than a within subjects design and increased external validity because more participants are used
. A disadvantage is that individual differences in participants can sometimes lead to differences in the groups’ results.
How many participants are needed for an independent measures design?
a. An independent-measures design would require
two separate samples
, each with 10 subjects, for a total of 20 subjects.
