AP Psychology Stats in Research Review

Which of the following is a not a descriptive statistic?

• finding the range of the results of a test

• calculating the median of a data set

• a histogram analysis

• inferring results from a small sample to a larger population

Random sampling

• tries to get a representative sample.

• always result in a representative samples

• is always biased

A P-value of .02 means that

• The results of of experiment is by accident.

• The results of the experiment is hardly due to chance.

• The independent variable has a 2% chance of making a difference.

• The results of the experiment is not significant.

Which P-Value means the results are significant?

• A P-value of .98

• A P-value of greater than .95

• A P-value of .1

• A P-value of less than .05

If your results have statistical significance, then you can

• generalize your results to a larger population.

• not generalize your results to a larger population.

If your results are positively skewed, then

• the mode is greater than the median.

• the mode is less than the median.

• the mean is greater than the median.

• the mean is less than the median.

Here are the results of an intelligence test {70, 80, 95, 105, 110, 160}. What is the range?

• 70

• 90

• 100

• 160

Here are the results of an intelligence test {70, 80, 95, 105, 110, 160}. How can you describe this data set?

• It is normally distributed

• It has a negative skew to it.

• It has a positive skew to it.

• The median will be the same as the mean.

The number of shows that students watch on Netflix would be best to illustrate by using a ___.

• Correlational graph

• Pie chart

• Histogram

• Bar chart

The number of shows watched on Netflix analyzing Freshmen, Sophomores, Juniors and Seniors would best be shown on a

• Correlational graph

• Bar chart

• Histogram

• Scatter plot