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WGU C207 Exam Questions With Complete Answers
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WGU C207 Exam Questions With Complete Answers
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WGU C207 Exam Questions With Complete AnswersThere are two types of statistics (Analytics) ✔️Ans - descriptive and
inferential
Descriptive statistics are used to ______ ✔️Ans - Inform / Explanatory
Inferential statistics are used to ______ ✔️Ans - Predict / Trend
Name the 4 levels of measurement ✔️Ans - (NOIR) Nominal, Ordinal,
Interval, Ratio
Continuous data with unique zero point ✔️Ans - ratio
Orders data at equal distance apart ✔️Ans - interval
Place qualitative objects in some kind of order ✔️Ans - ordinal
Identify, Group, or Categorize ✔️Ans - nominal
Outliers create this type of error ✔️Ans - out of range
Unpredictable error ✔️Ans - Random Error - No correlation
Error may occur from missing data.
(Example: Space not filled in) ✔️Ans - Omission Error - Distorted results
This error repeats itself ✔️Ans - Systematic Error - Skewed results
What is the process of quality control? ✔️Ans - Reduce/ minimize errors
All variable measurements and manipulations are under the researcher's
control ✔️Ans - Experimental Study
Used when impractical or impossible to control the conditions of the study
✔️Ans - Observation Study
, Participants are not told if they are in the treatment group or control group
✔️Ans - Blind Study
The procedure the researcher applies to each subject ✔️Ans -
Treatments
Neither the treatment allocator nor the participants know who is in the
treatment group or control group ✔️Ans - Double Blind Study
Questions favor an outcome or the interviewer ask questions that favor an
outcome. ✔️Ans - Information Bias
The average outcome (payoff) when the future includes scenarios that may
or may not happen ✔️Ans - Expected Monetary Value (EMV) Analysis
Observation points that are distant from other observations. ✔️Ans -
Outliers
Note: Can be included or excluded in analysis (causes skewness)
Bias that occurs from not selecting a random sample ✔️Ans -
Measurement Bias
Bias introduced because respondents believe it will be beneficial if
selected. ✔️Ans - Conscious Bias
Middle score for a set of data ✔️Ans - Median (Note: skewness does not
affect the median)
Tells us the number of standard deviations a data point is from the mean.
✔️Ans - Z-score = (Value - Mean) / Std Deviation
If the average is the same for two groups, what will determine their
difference? ✔️Ans - Variance (Standard Deviation)
The spread of data in a sample. How far the data points are from the mean.
✔️Ans - Standard Deviation
Measure of central tendency that is influenced by the size of the values in a
dataset. ✔️Ans - Mean
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