Psych stats Exam 1

Based on a frequency distribution table, X represents:

• Scores that could possibly be obtained

• The amount of people that obtained a certain score

• The proportion

• The percentage

Based on a frequency distribution table, what does f represent?

• The possible scores that could be obtained

• Proportion

• Percentage

• The amount of people to obtain a specific score

How to find the sum of subjects in a given data set

• Add up the X coloumn

• Add up the f coloumn

A histogram graph is best used to show what type of data set

• Ordinal/nominal

• Interval/ratio

• It would be correct to use a histogram to graph parental marital status data (single, married, divorced...) from a treatment center for children.

• True

• False

It would be correct to use a histogram to graph the time children spent playing with other children from data collected in a children’s treatment center.

• True

• False

True or False:

Is it possible for more than 50% of the scores in a distribution to have values above the mean?

• True

• False

True or false:

It is possible for more than 50% of the scores to have values greater than the median?

• True

• False

The standard deviation measures the _____.

• sum of squared deviation scores

• standard distance of a score from the mean

• total deviation of a score from the mean

• average squared distance of a score from the mean

Sample has less variability than a population:

• True

• False