Exam 11: Data Analysis and Interpretation: Part I Describing Data,confi Dence Intervals, Correlation

In general,the estimated standard error of the mean provides information about how well the sample mean estimates

One important reason for displaying correlational data in a scatterplot prior to computing a correlation coefficient is to determine whether

Having calculated a 95% confidence interval for a single population mean we may state that the odds are 95/100 that the

The standard deviation is equal to the square root of

A researcher finds a correlation of +.90 between two variables.Assuming the correlation coefficient was calculated correctly,which of the following is definitely not true?

To find the value of t critical for a repeated measures design,we calculate degrees of freedom based on the

As the degree of linear relationship between two measures increases,

The middle point of a distribution is the

The ____________ is the best measure of central tendency when there are extreme values in the distribution.

The "margin of error" typically reported for survey results estimates the difference between the sample results and the population values due to

When calculating Cohen's d as a measure of effect size,the difference between two means is

Values of the t statistic are defined by

The _________ the value of the estimated standard error of the mean,the _________ our estimate of the population mean.

A coherent "story" of data analysis for a study will include all of the following except

Which of the following is not a measure of dispersion or variability?

A student conducts a research project to test the effect of an independent variable with two conditions.The value for Cohen's d for her data is .25.Based on this,she concludes that the independent variable had _________ effect on the dependent variable.

A confidence interval is basically the same as

When interpreting confidence intervals when there are three or more means,if two or more intervals overlap slightly,we should conclude that

Explain the phrase,"Correlation does not imply causation."

The relationship between a correlation coefficient and a confidence interval for the population correlation Þ"rho")is