WGU C207 Questions and Answers with
Certified Solutions
What is the key focus on analysis? ✔✔To predict trends using quantitative data.
What are the four levels of measurement? ✔✔1. Nominal
2. Ordinal
3. Interval
4
...
WGU C207 Questions and Answers with
Certified Solutions
What is the key focus on analysis? ✔✔To predict trends using quantitative data.
What are the four levels of measurement? ✔✔1. Nominal
2. Ordinal
3. Interval
4. Ratio
Nominal data ✔✔is categorical. It has no numerical value. It's not a number.
Examples:
-the types of pizza you sell
-meatball
-veggie
-cheese
(these are labels, they can't be added or subtracted)
Ordinal data ✔✔is ranked, but doesn't have a specific value.
Example:
-the size of pizza (small, medium, large)
(we can't add or subtract these but we can put them in sequential order)
- order (key word)
- no numerical value
Interval data ✔✔data is numeric. You can add and subtract it. It has a sequential value. Each
value is equally spaced from the previous value.
Example:
- drink sizes are interval (16 oz, 20 oz, 24 oz) they are equally spaced about (4 oz spaced)
Ratio data ✔✔is numeric. Your sales per day are ratio data.
Example"
- 10 sales of $12.99 a piece = $129.99
(the value has a true value from zero)
To challenge the validity and reliability of data, ask two things. ✔✔Are there any outliers and
are there any errors?
Outliers ✔✔Don't throw them out. Do them in both ways.
Example:
last week, you were closed for two days for renovations. Sales were a zero for those two days.
That's an outlier. You include the outliers to know how its effecting your bottom line.
2 categories of errors ✔✔1. Random
2. Systematic
Random error ✔✔is something that happens just once and will not repeat over time.
Example:
if you are trying to find average delivery times and one delivery was effected by a four hour
Chicago traffic delay, that's random.
Systematic error ✔✔is when your deliveries (exam
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