stats

for any distribution what is the z score corresponding to the mean

0

If the Pearson correlation is calculated for a sample of n = 20 individuals, what value for df should be used to determine whether or not the correlation is significant?

18

For a perfectly symmetrical distribution with a median of 30, what is the value of the mean?

30

what is the correct denominator for the repeated measures F ratio

MSwithin

The results from a research study indicate that adolescents who watch more violent content on television also tend to engage in more violent behavior than their peers. The correlation between amount of TV violent content and amount of violent behavior is an example

a positive correlation

the relationship between a statistic and a parameter is the same as the relationship between

a sample and a population

statistical methods that organize, summarize, or simplify data are called

descriptive statistics

The scatter plot for a set of X and Y values shows the data points clustered in a nearly perfect circle. For these data, what is the most likely value for the Pearson correlation?

either postiive or negative near 0

what is indicated by a positive value for a correlation

increases in x, tend to be accompanied by increases in y

For an experiment comparing more than two methods for teaching social skills training to austistic children the independent variable and dependant varibale are

ind. teaching methods, dep. the social skills learned

What would the scatter plot show for data that produce a Pearson correlation of r = +0.88?

line that slopes up and to the right

Although a research study is typically conducted with a relatively small group of participants known as a _________, most researchers hope to generalize their results to a much larger group known as a _________.

sample, population

in analysis of variance what is measured by the MS values

the average distance from one mean to another

for an anova comparing three treatment conditions what is states by the null hypothesis

there are no differences between any of the population means.

the results from a two-factor analysis of variance show a significant main effect for factor A and a significant main effect for factor B

you cannot make any conclusions about significace of the interaction