Exam (elaborations)
WGU C207 DATA DRIVEN DECISION MAKING QUESTIONS AND ANSWERS 2024
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WGU C207 DATA DRIVEN DECISION MAKING QUESTIONS AND ANSWERS 2024
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WGU C207 DATA DRIVEN DECISION MAKINGThere are five steps to the process of results-based management. Which of the
following are three steps in the RESULTS part of results-based management? -
ANSWERS-Impact
c) Outputs
d) Outcomes
Which one of the following are examples of big data? - ANSWERS-b) The results of
a one-question survey about voting preferences collected from many
c) Weights of people in the city of Houston, Texas
d) Incomes of people from St. Louis
Data mining is not useful in: - ANSWERS-determining the underlying causes of
trends.
A company's revenue is 1.4 million dollars for the year and 400 thousand dollars
in the fourth quarter. The same company's costs are 1.2 million dollars for the
year and 350 thousand dollars in the fourth quarter. What is the ratio of revenue
to costs for the fourth quarter of the year? What is the proportion of revenue in
the fourth quarter to total revenue for the year? (Answers in the following form:
Ratio, Proportion) The answers are simplified. - ANSWERS-8:7, 2:7
,The Consumer Price Index (CPI) is an example of a ________. - ANSWERS-
Weighted Composite Index
The following is a list of prices for a barrel of oil over time:20 dollars in 199015
dollars in 199527 dollars in 200050 dollars in 200575 dollars in 2010What is the
simple index number for the price of oil in 2005? Hint: the base period is 1990.
(Source:
http://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=F000000__3&f=A)
- ANSWERS-250
Companies A, B, and C were the three construction companies in Dedge,
Minnesota in 2012. Companies A, B, and C built 9, 21, and 15 house additions in
2012, respectively. Company A went out of business after 2012 while Company C
seriously expanded. No construction companies were founded between 2012 and
2013. In 2013, Companies B and C built 25 and 29 house additions, respectively.
What is the simple composite index of house additions from the construction
companies in Dedge, Minnesota for 2013. Hint: the base period is 2012. -
ANSWERS-120
Which one of the following is NOT a fundamental element of, and essential to,
epidemiology? - ANSWERS-index number
If the United States had 300 Olympic athletes and 60 of them won a medal while
France had 100 Olympic athletes and 9 of them won a medal, which country had a
higher prevalence of Olympic athletes winning medals? By what percent? -
ANSWERS-United States, 11 percent
,California is about 160,000 square miles. Maine is about 35,000 square miles. If
California had one and a half times as many trees as Maine, then: - ANSWERS-
trees are more prevalent in Maine.
Which one of the following is criterion-referenced test? - ANSWERS-Medical
students needing to effectively give an appendectomy on a mannequin before
passing their appendicitis course.
When determining the reliability of a test, the same test is given to the sample on
two different occasions. What type of reliability test is this? - ANSWERS-Test-
Retest Method
How would a greater number of samples and a fewer number of populations
affect an ANOVA analysis? - ANSWERS-The results would be more accurate.
Mary is determining the likelihood that she will lose money on an investment.
There is an expected 10 percent gain in a normally distributed dataset, with a
standard deviation of 10 percent. The likelihood she'll lose money is _______
percent. - ANSWERS-16
Select the choice that is true. Regression analysis: - ANSWERS-takes information
from one data set and can predict information for another data set.
Jane works for a public health company. She is working on an anti-tobacco
campaign and is interested in how smoking cigarettes affects a smoker's
, cholesterol. She could use the number of cigarettes smoked per day as her _____
variable and place it on the __-axis. - ANSWERS-independent, x
We perform a regression analysis on a pair of variables and determine that there
is a linear relationship. The regression line is determined to be y=12x−5y=12x-5.
What type of linear relationship exists between the independent variable, x, and
the dependent variable, y? - ANSWERS-positive
describe R-squared? - ANSWERS-a) R-squared measures the goodness of fit.
b) R-squared can be misleading if there are false independent variables.
c) R-squared is 1.0 when correlation is -1 or 1.
Which of the following are technique a manager uses when forecasting? -
ANSWERS-A)Time Series
c) Associative
d) Judgmental
Which of the following are advantages of cluster analysis? - ANSWERS-b) It sorts
individual data points into different groups.
c) It will not help in determining target markets.
d) It does not identify successful and unsuccessful habits and systems.
A trend is... - ANSWERS-a general slope upward or downward over a long period
of time.
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