Unit 2 Study Guide Psych Quiz

___ describes the overall form of data distribution

Which kind of errors may result in poor sampling, poor measurement, or sampling variability?

If the null is true in the pop. a p less than .05 will lead you to make a type __ error

When examining a scatterplot, we are looking for:

___ is the central value of all data points in which they are distributed

ANOVA can be used in attributive hypotheses because it is a single variable

when is a prior power analysis is performed?

A __ is deciding there is a relationship between the two variables in the pop when there really isn't

____ examines the relationship between two variables, assessing how they are associated or correlated (Pearson'

Which error may be the result of having a too-small sample?

Which research hypotheses can ANOVA be used for?

Pearson's r tells us the direction and the strength of a linear relationship

A post hoc power analysis is performed when you ___

___ measures how spread out data points are from the mean in a dataset

A ___ occurs when a test fails to detect a true effect

The mean can be used with both quantitative and qualitative variables

If the null is false in the pop and the p value is greater than .05 will lead you to make a ___

A ___ error is a statistical decision error made when you mistakenly decide the variables are related in the target pop

___ is a test that compares two or more groups to see if their averages are different

statistical power is increased by larger ____

A priori power analysis is performed to estimate the ___ needed to find a significant effect.

Pearsons X^2 has:

___ estimates how much the sample mean is likely to differ from the true population mean

Correlation, Chi-Square, and ANOVA are all ___ statistics

A __ correctly rejects the null hypothesis but mis-specifies the relationship between the variables in the population

If the null is false in the pop a p less than .05 will lead you to make a ___

___ indicates how much data points differ from each other and from the center

Mean, standard deviation and skewness are all ___ statistics

___ variables are those for which different values indicate different kinds

Having sufficient power DECREASES the probability of making a Type 2 error

____ are measures/behaviors for which the set of participants have at least two different values

The ___ measures the extent of asymmetry of the distribution

___ variables are those for which different values indicate different amounts

____ is when all participants in the group have the same treatment in the study

The mean and the median can only be used with quantitative variables

What is median?

____ analyzes a single variable to describe its distribution, central tendency, and variability (mean, median, std)

____ variables are those for which different values indicate different kinds (categorical)

Correlation has:

____ are measures/behaviors for which all participants have the same value

when is a post hoc power analysis performed?

What is mean?

A __ happens when a signal is present but it is not detected

____ is when participants are in different groups and have different conditions

What is mode?

____ variables are those for which different values indicate different amounts (numbers)

If the null is true in the pop. and a p is greater than .05 it will lead to a ___

How many outcomes are there for Null Hypothesis Statistical Testing?