Exam 2: Graphical and Tabular Descriptive Techniques

Business School Graduates: A sample of business school graduates were asked what their major was. The results are shown in the following frequency distribution. -How many graduates were surveyed?

If we draw a straight line through the points in a scatter diagram and most of the points fall close to the line, there must be a positive relationship between the two variables.

A graph of the frequency distribution for interval data is called a(n) ____________________.

The sum of cumulative relative frequencies always equals 1.

Internet Classes: A survey of 25 students was conducted to determine how they rate the quality of Internet classes. Students were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality). The stem-and-leaf display of the data is shown below. -What percentage of the students rated the overall quality of Internet classes as being 60 or below?

Business School Graduates: A sample of business school graduates were asked what their major was. The results are shown in the following frequency distribution. -Draw a pie chart of this data. Are you able to reconstruct the original data from this pie chart alone?

In applications involving two variables, X and Y, where one variable depends to some degree on the other, we call Y the ____________________ variable.

A relative frequency distribution describes the proportion of data values that fall within each category.

The sum of the relative frequencies for all classes in a histogram always equals

Observations that are measured at successive points in time is what type of data?

The graph below represents a line graph.

A line chart is created by plotting the values of the variable on the vertical axis and the time periods on the horizontal axis.