Exam 2: Percentages, Graphs and Measures of Central Tendency

When each score is listed in order of magnitude, together with the number of individuals receiving each score, the researcher has set up

A skewed right distribution has the mean lower than the mode.

Adding just one or two extreme scores to the low end of a distribution, has a great effect on

When a skewed distribution tails off to the right, the distribution is

When scores are arranged in order of magnitude, the researcher has formed a

On a frequency distribution, raw scores are plotted on the

The most frequently occurring score in the distribution defines the

When the median is being calculated, it makes no difference whether one starts counting from the bottom or the top of the distribution.

All three measures of central tendency can be calculated when the data are in interval form.

Thirty-four members of a certain sorority were selected, and asked to indicate how many hours each had spent reading (for pleasure, not school work) during the previous week. The data are as follows: 50, 4, 10, 5, 5, 6, 7, 3, 5, 4, 4, 5, 6, 6, 7, 5, 8, 1, 8, 7, 5, 6, 10, 6, 8, 7, 7, 6, 5, 5, 4, 3, 4, 5. -Find the mode.

In a certain community, the median per-family annual income is $80,000. The Mean per-family income is $100,000, whereas the mode is $71,000. -the most appropriate measure of central tendency in this distribution Would yield a value of

The influence of a few extreme scores in one direction is most pronounced on the value of the

Bar charts are used instead of histograms when the data are

For the following set of scores, calculate the mean, median and mode: 20, 8, 18, 10, 15, 10, 13, 11.

The fact that the mean IQ of college seniors is higher than that of freshmen is probably due to

Thirty-four members of a certain sorority were selected, and asked to indicate how many hours each had spent reading (for pleasure, not school work) during the previous week. The data are as follows: 50, 4, 10, 5, 5, 6, 7, 3, 5, 4, 4, 5, 6, 6, 7, 5, 8, 1, 8, 7, 5, 6, 10, 6, 8, 7, 7, 6, 5, 5, 4, 3, 4, 5. -Which measure of central tendency yielded the lowest numerical value?

In a certain community, the median per-family annual income is $80,000. The Mean per-family income is $100,000, whereas the mode is $71,000. -if a new family were to move into the community with an annual income of $295,000, this would most affect

Traditionally, the researcher indicates frequency of occurrence on the graph's

For the following set of scores, calculate the mean, median and mode: 5, 7, 3, 9, 4, 5, 10, 9.

On a frequency distribution curve, frequency of occurrence is always plotted on the abscissa.