Statistics Final Review

Define measurement validity.

If nothing is happening and you reject the null hypothesis, what kind of error is this?

What is the sum of all deviations from the mean?

What is the square root of the variance?

What hypothesis describes what we think will happen in the analysis?

What are events that cannot occur at the same time?

The value of a variable that occurs more often than any other value.

Measures of central tendency are _______ statistics.

What is the value of K in Cramer's V?

If your Alternative hypothesis in non-directional, is your test one or two tailed?

Where is the X-axis?

What situation may cause a positive skew?

What stat allows us to do inferential stats and hypothesis testing on categorical data?

What's the level of risk we are willing to take in committing a Type I or Type II error?

In a data distribution, what should the proportion column add up to?

What test is used when doing a hypothesis test on a small sample?

What measures the proportion of cases of a variable that are not in the modal category?

What test do you use when your sample size is smaller than 50?

Values that represent categories or qualities of a case only

Which term is not a measure of central tendency?

What level of measurement does Pearson's R require?

What measure of association is used for variables with 2 categories only?

What type of distribution has two distinct modes?

What are proportions bounded by?

Pearson’s R is bounded by what numbers?

Which of the following is a measure of dispersion?

Research that seeks to identify the causes and/or effects of social phenomena?

What score indicates how many standard deviation units a score is away from the mean of zero?

If you calculate Pearson's R and the value is .89, what does this mean?

Which measure of central tendency may be influenced by outliers?

Chi-Square test tells you if two variables are associated. What does it NOT tell you?

Which of the following is NOT a probability sample?

A distribution that contains two distinct modes with the greatest frequency (not exactly equal)

The standard deviation is the square root of the variance.

What is a disadvantage of the mean?

What theory allows us to make statements about a population? (Inferential Statistics)

What can be used to measure the strength of the correlation between two interval variables?

Which measure of central tendency can only be used with interval/ratio level data?

What is a variable having two values?

Which measure of central tendency occurs most frequently?

What does it mean when a long tail is found on the right side of a distribution?

When two variables are correlated, but probably due to coincidence or a third variable?

What are the two basic types of sampling?

Pearson's R is bounded by what numbers?

Variable that is expected to cause or lead to variation or change in the other variable?

What level of measurement is required to calculate a standard deviation?

What measure of central tendency is the variation ratio based on?

As the independent variable increases, the dependent variable decreases.

What are the characteristics of the normal distribution?

The probability of an event NOT occurring is: