WGU formulas and study guide PDF

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STudy guide...

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Updated 8/2019: Thanks to the original composer for the great guidance.

1. Integers, rational and real numbers. WHOLE number 2. Equation a line: y=mx+b m= slope of the line b = y intercept (basically, where the line crosses the y axis.) * Example: say you have equation of the line y= 2x+6 , you know that line will go directly through 6 on the y axis. This can help you eliminate the wrong answers quickly ie.like seeing answers where the line crosses through say -3 or 1 you would know right away that is the wrong answer just by knowing the y intercept). 3.

Temperature formula: F*= (1.8x C*)+32 (only 1 question)

4. Know Standard Deviation I memorized the Bells Curve and drew it on my white board ASAP. I filled in/labelled all the percentages (34%, 13.5%. 2.5%, 0.15% & 68%, 95%, 99.7%), mean, +/-1SD, +/-2SD, +/-3SD, (may seem confusing now but once you look at the diagram you’ll know what I'm talking about). Formula for Standard deviation : *This is how my brain understood how to calculate Standard deviation outlined in Module 4. • • •

Standard deviation 1: Mean - SD & Mean + SD Standard deviation 2: Mean - (2 x SD) & Mean + (2 x SD) Standard deviation 3: Mean - (3 x SD) & Mean + (3 x SD)

*The diagrams above was the Bell’s curve that I memorized and drew on my white board as reference. I know its not curved lol but it helped me. I’m not artistic. I was inspired by one in module 4 under Descriptive Statistics for a Single Variable (Numerical Measures) of the course material and it is a blue Bells curve. You can't miss it. Find a Bells curve that works for you! 5. Histograms: Know how to identify pictures of different types (ie.bimodal/multimodal) Two way Table : have two categorical variables (just knowing this was enough) Know what is categories and what is quantity. SCATTERPLOTS!!! I felt was everywhere. Understand them inside out. ie. Know how to identify positive and negative relationships. Know if you/when you would use box plot, pie chart, stem plot, histogram for data they provide you with. 6. I never understood probability to begin with but still passed. The OA questions for probability were similar in format to the PA (Example in the PA section for Independence/dependence & Finding probability of events, similar structured questions were found on the OA). Probability makes up a significant portion of the exam and If you get it, more power to you. But if you are having a hard time with probability, at least do the end of module

test/practice tests to have some understanding. (Or you can call the help desk. I didn't lol) 7. If you are ok in Algebra, just do the practice tests at the end of the algebra section for additional practice. 8. Modules 4 & 5 are crucial. (Especially if you couldn't get probability like me, know this section inside out )

Mean: average (sum of data divide by # of values in the data) Median: middle number/halfway point Mode: number occurring most often in a data set. I also memories this and wrote it on my white board once the test start it. This is my way of short term memory. C-Categorical Q-quantitative. when I read the question, I just label them with C or Q CC- two way- conditional percentages CQ-side by side- 5# summary QQ-scatter plot- correlation coefficient study your PA for probability question! know the concept and know how to CALCULATE them!!...