WGU – C784: APPLIED HEALTHCARE STATISTICS | COMPLETE
STUDY GUIDE, PRACTICE QUESTIONS & EXAM REVIEW
1. Temperature Conversions: F = C × 1.8 + 32
C = (F−32) ÷ 1.8
2. Slope intercept form of a line: y=mx + b
• m=slope=/55 55Vb55`[5R
• b=y-intercept=the point (0, b)
3. Basic tips for inequalities in one-variable: < or > is graphed using an open circle °
do r ei s graphed using a filled circle •
Flip the direction of the inequality sign when multiplying or dividing by a negative
4. Measures of Center: Mean=the sum of all the data points, divided by the number of data points.
Median=the middle number when all the data points are written in order from least to greatest.
Mode=the most frequent data point.
5. 5 Number Summary: Includes the minimum, maximum, Q1, Q2 (median), and Q3
6. Finding Outliers: Find the quartiles.
• Any data value less than Q1 - 1.5(IQR) is an outlier.
• Any data value greater than Q3 + 1.5(IQR) is an outlier.
7. Measures of Spread: Range = max - min
IQR = Q3 - Q1
8. • Standard deviation, if a data set is normally distributed, then:: A pproximately 68%
of the data fall within 1 standard deviation of the mean.
Approximately 95% of the data fall within 2 standard deviations of the mean.
Approximately 99.7% of the data fall within 3 standard deviations of the mean.
9. Categorical: Pie Chart
Bar Chart
10. Quantitative: Histogram
Stem Plot
Box Plot
Dot Plot
11. Pie Chart: part/whole = %/100
1/2
STUDY GUIDE, PRACTICE QUESTIONS & EXAM REVIEW
1. Temperature Conversions: F = C × 1.8 + 32
C = (F−32) ÷ 1.8
2. Slope intercept form of a line: y=mx + b
• m=slope=/55 55Vb55`[5R
• b=y-intercept=the point (0, b)
3. Basic tips for inequalities in one-variable: < or > is graphed using an open circle °
do r ei s graphed using a filled circle •
Flip the direction of the inequality sign when multiplying or dividing by a negative
4. Measures of Center: Mean=the sum of all the data points, divided by the number of data points.
Median=the middle number when all the data points are written in order from least to greatest.
Mode=the most frequent data point.
5. 5 Number Summary: Includes the minimum, maximum, Q1, Q2 (median), and Q3
6. Finding Outliers: Find the quartiles.
• Any data value less than Q1 - 1.5(IQR) is an outlier.
• Any data value greater than Q3 + 1.5(IQR) is an outlier.
7. Measures of Spread: Range = max - min
IQR = Q3 - Q1
8. • Standard deviation, if a data set is normally distributed, then:: A pproximately 68%
of the data fall within 1 standard deviation of the mean.
Approximately 95% of the data fall within 2 standard deviations of the mean.
Approximately 99.7% of the data fall within 3 standard deviations of the mean.
9. Categorical: Pie Chart
Bar Chart
10. Quantitative: Histogram
Stem Plot
Box Plot
Dot Plot
11. Pie Chart: part/whole = %/100
1/2
