WGU C784 Statistics for Healthcare Exam Questions and Answers

WGU C784 Statistics for Healthcare
Exam Questions and Answers

(F-32)/1.8 - ANS-F to C

1.8C + 32 - ANS-C to F

graph with open circle - ANS-< or >

graph with closed circle - ANS-≤ or ≥

if multiplying or dividing by a negative - ANS-inequalities: flip the sign

< Q1 - 1.5IQR
> Q3 + 1.5IQR - ANS-outliers are

68% - ANS-what percent of data are w/in 1 sd?

95% - ANS-what percent of data are w/in 2 sd?

99.7% - ANS-what percent of data are within 3 sd?

pie chart, bar chart - ANS-single variable categorical data use

dot plot, stem plot, box plot, histogram - ANS-single variable quantitative data use

display: two way table
numerical: conditional percentage - ANS-C to C data

display: side-by-side box plot
numerical: 5 number summary - ANS-C to Q data

display: scatterplot
numerical: correlation coefficient - ANS-Q to Q data

mode < median < mean - ANS-if data are positively skewed how are mean, median and
mode affected?

mean < median < mode - ANS-if data are negatively skewed how are mean, median
and mode affected