Question 1

MODIFIED TRUE/FALSE -Standard deviation is a measure of the variability of a set of data._________________________

Accepted Answer

Standard deviation measures the spread or variability of data around the mean.

Question 2

MODIFIED TRUE/FALSE -You can model your decisions quantitatively, which means you represent the decision and its factors using letters._________________________

Accepted Answer

numbers

Question 3

The first chart that Helen is putting together shows the sales growth of organic dog food over time.What type of chart would you recommend that Helen uses?
A) pie chart
B) area chart
C) line chart
D) any of the above

Accepted Answer

A line chart is the best choice for showing sales growth over time because it allows Helen to plot the data points and connect them with a line, showing the trend over time. A pie chart and area chart would not be appropriate because they are better suited for showing proportions or part-to-whole relationships.

Question 4

Like OpenOffice Calc, ____ is a free, open-source spreadsheet program that is part of the GNOME desktop for computers running the Linux operating system.
A) Gnumeric
B) Google
C) GCalc
D) GStat

Accepted Answer

Gnumeric is the free, open-source spreadsheet program that is part of the GNOME desktop for computers running the Linux operating system. Google is not a part of GNOME, and GCalc and GStat do not exist as spreadsheet programs in the GNOME desktop.

Question 5

MODIFIED TRUE/FALSE -When you solve a problem systematically, you react immediately and instinctively, without following a particular procedure._________________________

Accepted Answer

intuitively

Question 6

MODIFIED TRUE/FALSE -A DSS is ideal for analyzing complex problems that involve sets of data and demand a systematic decision-making approach._________________________

Accepted Answer

This statement accurately describes the capabilities and purpose of a Decision Support System (DSS).

Question 7

When modeling a decision using ____ data, you can use mathematics to help you analyze and compare the data.
A) quantitative
B) qualitative
C) both a. and b.
D) neither a. nor b.

Accepted Answer

Quantitative data involves numerical measurements and can be analyzed using mathematical methods such as statistical analysis, which can help in comparing and making decisions based on the data. Qualitative data, on the other hand, is based on non-numerical observations and cannot be analyzed using mathematical methods.

Question 8

On a decision tree, ____ represent decisions.
A) triangles
B) squares
C) rectangles
D) ovals

Accepted Answer

Squares are typically used to represent decision points on a decision tree, where a choice must be made between different options.

Question 9

Bar charts are oriented ____.
A) horizontally
B) vertically
C) either a. or b.
D) neither a. nor b.

Accepted Answer

Bar charts can be oriented either horizontally or vertically, depending on the design and requirements of the data presentation.

Question 10

The second chart Helen is preparing is one that shows organic dog food as a percentage of total dog food sold in January.What type of chart should Helen use?
A) pie
B) scatter
C) line
D) any of the above

Accepted Answer

A pie chart would be the best choice for showing the percentage of organic dog food sold in January. Pie charts are ideal for displaying proportions and percentages.

Question 11

A(n) ____ typically defines a calculation that you perform on one or more variables.
A) formula
B) property
C) behavior
D) arithmetic mean

Accepted Answer

A formula is a mathematical expression that defines a calculation to be performed on one or more variables. It can be used to calculate values, make decisions, or perform other operations. Properties and behaviors are not specific to calculations, and the arithmetic mean is a specific type of calculation.

Question 12

-Referring to the figure above, to show directions or trends in a linear data series over time you would use the ____ chart.
A) pie
B) bar
C) line
D) scatter

Accepted Answer

A line chart is best suited for displaying data trends or directions over time by connecting data points with straight lines.

Question 13

A decision tree is a support tool that models decisions using a treelike diagram.Each branch of the tree represents an option and its ____.
A) benefits
B) costs
C) likelihood
D) all of the above

Accepted Answer

Decision trees model decisions by representing options along with their benefits, costs, and likelihood, making all of the above correct.

Question 14

-Referring to the figure above, if you wanted to compare the percentage of an element to the whole, you would use the ____ chart.
A) pie
B) bar
C) line
D) scatter

Accepted Answer

A pie chart is specifically designed to show parts of a whole, making it the best choice for comparing the percentage of an element to the whole.

Question 15

Decision variables are values that could change and affect the results.Statisticians refer to these as ____ variables.
A) dependent
B) independent
C) codependent
D) child

Accepted Answer

Decision variables are those variables that can be controlled or manipulated by the researcher. Therefore, they are referred to as independent variables since their values are not influenced by any other variables in the study. Dependent variables, on the other hand, are influenced by the independent variables and are used to measure the effect of the independent variables. Codependent variables and child variables are not commonly used terms in statistics.

Question 16

MODIFIED TRUE/FALSE -The mean of a set of data is the value that occurs most frequently._________________________

Accepted Answer

mode

Question 17

MODIFIED TRUE/FALSE -A cell reference is a pointer that you include in a formula to tell the spreadsheet where to find the actual data._________________________

Accepted Answer

This statement is true. A cell reference is essential in creating a formula in a spreadsheet as it tells the program where to retrieve the data needed to calculate the formula.

Question 18

Helen has researched some software and found one that completes 3D scatter plots.It turns out that most software tools can display 3D scatter plots with up to ____ dimensions.
A) three
B) four
C) five
D) six

Accepted Answer

The question states that "most software tools" can display 3D scatter plots with up to "____ dimensions." Therefore, the answer cannot be A because "three dimensions" is already mentioned in the question. It also cannot be C or D because they exceed the term "most," suggesting that only a minority of software tools can display 3D scatter plots with five or six dimensions. Therefore, the best answer is B, which suggests that a significant number of software tools can display 3D scatter plots with four dimensions.

Question 19

When normalizing, you usually ____ the data by a variable so you can compare the variables fairly.
A) multiply
B) divide
C) either a. or b.
D) neither a. nor b.

Accepted Answer

Normalizing involves dividing the data by a variable to make the variables comparable.

Question 20

MODIFIED TRUE/FALSE -A decision tree is a support tool that models decisions using a treelike diagram._________________________

Accepted Answer

The answer of MODIFIED TRUE/FALSE -A decision tree is a support...

Quiz 5: Decision Support Tools

MODIFIED TRUE/FALSE -Standard deviation is a measure of the variability of a set of data._________________________

MODIFIED TRUE/FALSE -You can model your decisions quantitatively, which means you represent the decision and its factors using letters._________________________

The first chart that Helen is putting together shows the sales growth of organic dog food over time.What type of chart would you recommend that Helen uses?

Like OpenOffice Calc, ____ is a free, open-source spreadsheet program that is part of the GNOME desktop for computers running the Linux operating system.

MODIFIED TRUE/FALSE -When you solve a problem systematically, you react immediately and instinctively, without following a particular procedure._________________________

MODIFIED TRUE/FALSE -A DSS is ideal for analyzing complex problems that involve sets of data and demand a systematic decision-making approach._________________________

When modeling a decision using ____ data, you can use mathematics to help you analyze and compare the data.

On a decision tree, ____ represent decisions.

Bar charts are oriented ____.

The second chart Helen is preparing is one that shows organic dog food as a percentage of total dog food sold in January.What type of chart should Helen use?

A(n) ____ typically defines a calculation that you perform on one or more variables.

-Referring to the figure above, to show directions or trends in a linear data series over time you would use the ____ chart.

A decision tree is a support tool that models decisions using a treelike diagram.Each branch of the tree represents an option and its ____.

-Referring to the figure above, if you wanted to compare the percentage of an element to the whole, you would use the ____ chart.

Decision variables are values that could change and affect the results.Statisticians refer to these as ____ variables.

MODIFIED TRUE/FALSE -The mean of a set of data is the value that occurs most frequently._________________________

MODIFIED TRUE/FALSE -A cell reference is a pointer that you include in a formula to tell the spreadsheet where to find the actual data._________________________

Helen has researched some software and found one that completes 3D scatter plots.It turns out that most software tools can display 3D scatter plots with up to ____ dimensions.

When normalizing, you usually ____ the data by a variable so you can compare the variables fairly.

MODIFIED TRUE/FALSE -A decision tree is a support tool that models decisions using a treelike diagram._________________________