Blog

If the population from which you are randomly selecting your sample is large (vs. small) what effect will a large population standard deviation have on the standard error of the mean (sampling error)?

Behavior analysts are required to obtain informed consent from clients before implementing a behavior plan. What does this ensure?

In a distribution of scores what is the difference between Q3 and Q1 referred to?

Define what is a confounding variable.

If sleep quality was measured using an actigraphy and the reliability of the instrument was .001, what would be your evaluation of the reliability of the actigraphy?

What effect will increasing the sample size have on statistical power?

If you were correlating age and physical activity, for which group would the correlation between age and physical activity be the strongest correlation?           Group A                                                                   Group B

A researcher is studying the relationship between two variables. Viewing the scatterplot leads the researcher to conclude the variables have a curvilinear relationship. The researcher should do what? 

When the correlation between X and Y is zero, the slope of the regression line is

A researcher develops a prediction equation with their first sample of participants, and then uses that equation to predict scores in a second new sample of participants.  The researcher should expect the prediction errors to tend to