Statistics Ch.4

If you have a distribution of 50 scores, and you want 10 intervals, what should be the size of your class interval?

5

What is the term associated with the upper or lower boundary of a set of scores used in the creation of a frequency distribution?

Class Interval

This is a type of chart in which categories are organized horizontally on the x-axis, and values are shown vertically on the y-axis.

Column chart

What is the frequency distribution that shows frequencies for class intervals, along with the cumulative frequency for each?

Cumulative frequency distribution

What is the most basic method of illustrating data?

Frequency distribution

When tallying and representing how often certain scores occur, which type of data illustration method is being utilized?

Frequency distribution

What is a graphical representation of a frequency distribution?

Histogram

What type of chart or graph displays class intervals along an x-axis?

Histogram

If you wanted to look at the flatness or peak of a distribution, you would need to look at _______.

Kurtosis

Which of the following can be used to measure the shape of a distribution?

Kurtosis

If you wanted to depict trends in ice cream sales over the four seasons, what kind of chart would you use?

Line chart

Which of the following are among the things to remember when creating figures?

Maintain the scale in the graph

What do you need to calculate first before calculating skewness?

Mean and Median

A distribution of scores in which almost the entire class scored very high but a few students scored fairly low would be _______.

Negatively skewed

If the mean = 12, and the median = 21, then what can be said of the distribution?

Negatively skewed

A distribution of scores in which almost the entire class scored very low but a few students scored fairly high would be _______.

Positively skewed

If the mean of a set of scores is greater than the median, what can be said about the distribution?

Positively skewed

This is another word for the lopsidedness of a distribution:

Skewness

What is the term associated with the lack of symmetry in a distribution?

Skewness

The largest class interval goes here on a frequency distribution:

The top

If the mean = 24, and the median = 24, then what can be said of the distribution?

no skew

To modify a chart's elements in Excel, which of the following icons should you click on?

plus sign icon

What is the vertical axis on a graph called?

y-axis

Optimally, when choosing a class interval, you should have approximately this many intervals covering the entire range of data:

10 to 20