Statistical Methods Review

Identify the number of ways in a 5 x 3 x 2 study.

When P obtained is small enough (<.05), ______ the null hypothesis.

When you fail to reject the Null Hypothesis, there is a _______ error.

To find SS_within

Which of the following does not measure effect size?

As the test statistics (TS) ________, P obtained __________.

Which is the correct way to report t-test results?

When you reject the Null Hypothesis, there is a _____ error.

What is the most serious assumption to fail in ANOVA?

____ quantifies how similar or dissimilar the group means are from each other.

_______, or 1-β, is a measure of how well a hypothesis test can detect an effect.

An independent t-test is used to:

Eta-squared tells you how much of the total variance is explained by the data.

A two-tailed test, also known as a _____, is the standard test of significance to determine if there is a relationship

Mean Square (Variance) of SSbetween

σ is...

What does a z-score of 2.0 indicate?

____ is the probability of making at least one Type I error in a research study that involves multiple comparisons

___________ tells the strength of an effect or a phenomenon

How do you find Sum of Squares?

Type I error (α level) is the predetermined significance level.

Probability that getting the data we got if no effect exists (H0 is true) is _____.

μ is...

When the sample size increases, the standard deviation of the sampling distribution (i.e., standard error)

The Bonferroni correction is calculated by

df_between + df_within

Degrees of Freedom indicate

What does variance represent?

Which of the following is not in central tendency?

One-tailed test have ____ critical regions.

Null Hypothesis Significance Test (NHST) assesses the strength of evidence in favor of the null hypothesis.

Degrees of freedom in a two-sample t-test are calculated by:

η² =

Identify the number of ways in a 2 x 3 study.

Type I error occurs when we believe that there is no genuine effect in the population when, in fact, there is.

___________assesses the strength of the evidence or probability against the null hypothesis

___ means that each comparison looks at the difference between the means of a pair of design conditions

The Standard Error of the Mean (SE) reflects

Non-directional tests are called "two-tailed" because there is a possibility that the alternative population could be

A paired sample t-test is used to:

Increasing the sample size can help reduce the chances of a ______ error.

Two-tailed tests divide the . 05 in two and put half on each side of the bell curve.

Find mean of each group, find difference between each group mean to M_total, square difference, multilpy by individuals

Use Bonferroni when making multiple comparisons because it keep the Type I error rate from being inflated.

Independent factors are referred to as

A _______ sample size can lead to a type I error by hiding the significance of the items being tested.

A higher power means a lower risk of a type II error, but a higher risk of a type I error

What does standard deviation represent?

Dependent factors are referred to as

Test statistics is used to calculate _______.

Effect or relationship exists between IV and DV is the

What does sum of squares represent?

____ quantifies how well each group mean does at representing the scores in each group

Type II error occurs when we believe that there is no effect in the population when, in reality, there is.

Each way consists of _____ groups which are called levels.

When P obtained is small enough (<.05) the results are ______.

Would you expect the Standard Error to be larger when samples have:

Which of the following is a Null Hypothesis (H0)?