STATS

scatter plot shows

1. If an obvious association exists between two variables. 2. Pairs of observations (x1, y1) . . . (xn, yn) on an X-Y graph.

The pictured graph from a New York Times op-ed piece has some misleading components to it; which of the following elements are misleading?

1. The higher, by position, the category icon, the lower the rating. 2. All the ratings arrows end at the same point, regardless of the actual rating.

Tables are frequently used to display data because

1. a well-designed table can communicate the meaning of data at a glance. 2. they are the simplest form of data display.

Excel's pivot table feature

1. allows interactive analysis. 2. summarizes categorical data. 3. summarizes discrete numerical data.

Characteristics of a bar chart include:

1. length or height of bar reflects frequency of a category. 2. Display horizontal bars when the axis labels are long or there are many categories.

Identify the problems with the pictured graph.

The time range needs to be specified. The vertical axis limit is too high. There is no 0 value on the vertical axis.

Which of the following statements is true?

Column or bar charts can be used to display time series data using the time periods as the category labels.

True or false: Distributions of business data are typically (but not always) left skewed

FALSE

Which of the following is NOT a tip for an effective table display?

Headings should be detailed and complex in order to be as descriptive as possible.

Identify the characteristic below that does NOT describe a Pareto chart.

Most common categories appear to the far right on the graph.

There are several guidelines that one should follow when creating graphs. Which of the following describe these guidelines?

Novelty graphs such as pyramid charts introduce ambiguity. Axes that are numerical should be to the appropriate scale. Axes should be clearly labeled.T

Which of the following graphical depictions displays cumulative data?

Ogive

__________ charts are used to sort out the vital few from the trivial many.

PARETO

An outlier is defined as

an extreme value is might have arisen from measurement error. an extreme value that might have arisen from a different cause. an extreme value that is located in the tail of the histogram.

A pie chart is a segmented circle whose segments must sum to a ______.

total, whole, or 100% (CHOOSE ONE)

A new dining plan was implemented in a residence hall at State University. Residents were asked to assess the new plan and give a grade of A, B, C, D, or F to the new dining plan. 482 total residents provided the following grades: A, 234; B, 148; C, 87; D, 9. There were ____ "F"s.

4

Which of the following statements is an accurate statement about a bar chart?

Generally, there is space between the horizontal bars.

A _____ _____ is a type of graph that allows researchers to investigate the relationship between two variables.

SCATTER PLOT

A stacked column chart requires that the column height be a _____ of at least two subtotals.

SUM

Which of the following graphical depictions allows you to examine the relationship between two variables?

Scatterplot

A ________ column chart shows the sum of several subtotals in each column.

Stacked

True or false: Line charts can be useful for comparing variables that differ in magnitude or units.

TRUE

Which of the following is NOT a common error one should beware.

Unembellished charts that do not contain sound or animation.

Which of the following is NOT a common error in making graphs?

Using a logarithmic scale.

To construct a frequency distribution for qualitative data, the data is split into

categories

Stem-and-leaf displays can be used to

determine central tendency and dispersion. observe individual data points. analyze the small samples of integer data.

The length of a bar or height of a column in a bar or column chart represents the ____ of a category.

frequency, value, or count (CHOOSE ONE)

An Excel _____ table provides interactive analysis of data.

pivot

Which of the following graphical depictions are useful to observe the shape (distribution) of a data set for a single numerical variable?

1. Polygon 2. Histogram 3. Stem-and-leaf diagram

Which of the following graphical depictions are useful for observing the spread of the data for a single variable?

1. Stem-and-leaf diagram 2. Polygon 3. Histogram

In a random survey of 500 people, 75 of the people stated that Klean laundry detergent was their preferred brand when compared to other laundry detergents. If a pie chart of laundry detergent preferences is created,based on the aforementioned survey, what is the appropriate percent in the circle to represent the preference for Klean detergent? _____%

15 (math: 75 divided by 500 then multiplied by 100)

A new dining plan was implemented in a residence hall at State University. Residents were asked to assess the new plan and give a grade of A, B, C, D, or F to the new dining plan. 482 total residents provided the following grades: A, 234; B, 148; C, 87; D, 9; F, 4. _____% of the grades were "B"s.

30.7, 30.7%, 31, or 31% (CHOOSE ONE)

Which characteristic below is NOT a rule of thumb for displaying categorical data on a column chart?

The height of each column should be the same.

One method of graphical presentation for qualitative data is

a bar chart.

Print media such as Forbes or NYTimes should not judged using the same rigorous standards as _____ journals.

academic