AP psychology Unit 2 Module 7

A way of measurement that shows how much the scores depart from a mean?

• range
• reliability
• inferential statistics
• standard deviation

The most frequently occurring score(s) in a distriution is the ______.

• Mode
• Mean
• Median
• Range

A teacher wants to find out the average score of their class' test. What should she use to figure it out?

• Mode
• Mean
• Median
• Range

What is the median of the data?

• The most frequently occuring score
• The middle score of a distribution
• The arithmetic average
• The difference between the highest and lowest score

Which of the following is a measure of variation?

• Mode

• Frequency

• Mean

• Range

A researcher calculates statistical significance for her

study and finds a 5 percent chance that results are due

to chance. Which of the following is an accurate

interpretation of this finding?

• This is the minimum result typically considered

  statistically significant.

• This is well beyond the range of statistical

  significance.

• This is not statistically significant.

Descriptive statistics______ , while inferential

statistics _______.

• summarize data; determine if data can be generalized

  to other populations

• determine if data can be generalized to other

  populations; summarize data

• indicate the significance of the data; summarize the

  data

• describe data from experiments; describe data from

  surveys and case studies

In a normal distribution, what percentage of the scores

in the distribution falls within one standard deviation on

both sides of the mean?

• 40 percent

• 68 percent

• 95 percent

• 50 percent

(For example, if "80" is the "mean or average scores", then a score of "85 "would be a difference of "5", and so on with all the scores. How is "standard deviation measured"?)

To achieve a standard deviation, you average the differences of each value and square them, then take the average of the sum of those, and finally take the...... to find the standard deviation

• sum multiplied by .2

• square root

• average and multiply by 10

What is "one standard deviation" from the average or "mean" score

• 20 points

• 15 points

• 10 points

• 40 points