PSYC 0340 Final Review Part 1

Which of the properties listed below is NOT a property of a normal curve?

________ is the probability of a type I error, reject the null hypothesis when it is true.

Number of children is an example of a _________ variable.

__________ are used to compare the relative sizes of categories.

In statistics, traits that can change values from case to case are called _________.

___ is the most used measure of dispersion; uses all scores in distribution & describes typical deviation of scores.

__ uses all scores in distribution, describes typical deviation & increases value as distribution becomes more diverse.

__________ is a type of spread measure that considers only the middle 50% of the cases in a distribution.

A _______ difference is simply one where the measurement system was capable of detecting a difference.

What is the Z Score for a confidence level of 95% and a alpha of 0.05?

_____ is an estimated range of values that seem reasonable based on what we have have observed.

_______________ are tables that report the number of cases in each category of a variable.

What sampling technique guarantees the sample will be representative on selected traits?

_________ is a theoretical, probabilistic distribution of a statistic for all possible samples of a given size (N).

Distorted by atypically high/low scores & provides no info about variation between high/low scores are limitations of

For a variable measured at the nominal level, you would use _________ as a measure of central tendency.

A statistically significant difference is a difference between groups that may be small and unimportant.

___________ tells us the distance between the mean of a distribution and a data point in standard deviations

_____________refers to the variety, diversity, or amount of variation among scores.

_____________indicates the probability of observing the difference if no difference exists.

∑ stands for what?

Statistics that describe or summarize the relationship among three or more variables are called __________.

Statistics that are used to generalize from a sample to a population are called ___________.

The ___like a C.I., reflects the uncertainty that surrounds the sample estimates of parameters.

What does this equation calculate? (9/10) x 100

__________ is the statistical term for describing two or more events that cannot happen simultaneously.

A ___________ distribution has a mean greater than the median value.

In statistics what symbol do we use to represent the standard deviation of a population?

Type II or _________ error occurs when you fail to reject the null hypothesis when the null hypothesis is false.

______________ is the exact center of a distribution of scores.

______________ are mathematical tools used to organize summarize, and manipulate data.

The highest score in a data set minus the lowest score in a data set gives you the _____________

A ______ is a mathematical table that allows us to know the percentage of values below (to the left) a z-score in a SND.

What does this equation calculate? (1432/1500)