Statistics 1 Midterm Review

If the smallest score in the distribution is 10 and the largest is 32, then what is the range for these data?

In a probability experiment, an event consists of ___________.

Which of the following statements are always true?

Which z-score will have the largest area of the normal curve to the right of it?

A decrease in Type II error leads to

Power = 1 - beta

You have determined that for your research, beta = .85. What does this suggest?

Interval scale has a true zero

A researcher records the number of times a person repeats a compulsive behavior. What type of data was measured?

One-way ANOVA is also referred to as a between-subjects ANOVA

Name the test you would run in determining whether 15 clients reported increase in life satisfaction from pre to post

True or False. The mean always has a value equal to one of the raw scores in a data set.

Researchers interested in establishing the past year prevalence of MDD among U.S. high school students would likely use:

Which of the following is NOT true of the normal distribution?

A positive skew may have a tail that indicates extreme scores ________ the center of the distribution.

If a researcher conducted a study in which statistical significance was set to .05 and statistical power = 0.85

A normal distribution has a mean of 10 and a standard deviation of 2. What is the z-score for X = 13?

What does the symbol, P(X), represent?

A normal distribution has a mean equal to 3.4 What is the probability of a score above the mean?

The standard error of the mean ___

Final grades in a class with grade inflation would result in a distribution with a ___________.

A statistical decision to fail to reject the null hypothesis can be interpreted as _______.

Cohen's d = .20 indicates a small effect size

A t-test is used to compare means of 2 or more groups.

In a distribution that is positively skewed, which measure of central tendency is the largest?

Which set of statistics would result in a higher percentile for an exam score of 87?

Find the value of 1-tailed t-test with an alpha of .05, and 2 degrees of freedom.

Under null hypothesis significance testing, when a test statistic is deemed statistically significant, it indicates that

What are the df within groups for a one-way within-subjects ANOVA with n=12 participants observed in 3 groups?

In order to compare an individual score to a distribution, we need to convert which of the following?

. ___________ has implications for internal validity and ___________ has implications for external validity.

The sample of randomly selected students consists of mostly women. This is an example of _____.

As confidence level increases, margin of error increases.

Hypothesis testing tells us which of the following?