WGU - Applied Healthcare Statistics Exam Questions and Answers 100% pass

WGU - Applied Healthcare Statistics Exam Questions and Answers 100% pass Rational numbers - Answer- Largest number system Rational numbers - Answer- Can be expressed as a fraction. 4 = 4/1. Also decimals that end or continue forever repeating. Real numbers - Answer- Any number; Include zero, negative and positive integers. Real numbers are considered this. - Answer- continuous and can be measured. Discrete data - Answer- counted; doesn't allow for values between. Every positive whole number has two square roots. - Answer- True Identity Property - Answer- Property that 0 can be added to any number without changing the value of the number. Likewise, 1 can be multiplied by any number without changing the value of that number. Factor - Answer- An integer that divides another integer. We say an integer, x, is a factor of another integer, y, if the quotient y/x is also equal to an integer. Fundamental Theorem of Arithmetic - Answer- Concept which states that any integer greater than 1 is either prime or is the product of a unique set of prime numbers. Factorization - Answer- Process of determining the prime factors of a composite number. data - Answer- Values; qualitative or quantitative. Square root - Answer- is only a real number base - Answer- number of outcomes Percentage proportion is always set up to express percentage value - Answer- over 100 conditional proportion - Answer- proportion where one part of a proportion is a variable, or unknown quantity. cross multiplying - Answer- method used to prove that a proportion is true. rate - Answer- ratio that compares two quantities having different units of measure. unit multiplier - Answer- fraction that contains two equivalent quantities but in two different units, used in order to convert units. unit conversion - Answer- method used to change between measurement systems. all real numbers with a fixed value, prime, composite, odd, even, rational, or irrational. - Answer- constants 0 - Answer- expression known as a constant. 1 - Answer- expression known as linear. 2 - Answer- expression known as quadratic. 3 - Answer- expression known as cubic. False - Answer- Process for undoing multiplication and division operations will always work, even if one of the numbers is zero. A variable with an exponent of 0 is equal to - Answer- 1 root of a number - Answer- non-linear most simple algebraic equations are - Answer- linear equations two terms or expressions with an equals sign between them is - Answer- an equation origin; where x and y intersect. - Answer- 0, 0 linear; degree 1 - Answer- straight line slope-intercept form - Answer- y = mx + b point-slope form - Answer- y - y1 = m(x - x1) large coefficient - Answer- steep line small coefficient - Answer- gentle slope algebraic expression - Answer- String of terms connected by division, addition, and subtraction. variance - Answer- A measure of spread within a distribution (the square of the standard deviation). Qualitative - Answer- categorical; in groups; names or labels; pie charts or bar charts. Quantitative - Answer- number; counted, measured bar charts - Answer- categorical; counts, frequency of category. graphic; quantitative data - Answer- dot plots, stem plots, box plots, histograms dot plot - Answer- quantitative; distribution; clusters, gaps, outliers; small sets. stem plot - Answer- quantitative; distribution; shape box plot - Answer- quantitative; distribution; center; spread; outliers in a given data set. histogram - Answer- quantitative; frequency; count; shape and spread, intervals. distribution of quantitative data - Answer- Shape, spread, max, min, outlier graphic; quantitative - Answer- symmetry, skew, U-shaped; uniform; bi-modal; approximately normal. pie chart - Answer- categorical; different parts of a whole. In a dot plot, depending on the data collected, every data value or groups of data values can be represented by a dot. - Answer- False The first step in building a dot plot is to draw a horizontal scale. - Answer- False; first arrange data in increasing order. histogram; quantitative - Answer- frequencies; relative frequency bar chart; categorical - Answer- frequency, counts, or relative frequencies. symmetric does not mean normal - Answer- bell curve asymmetry - Answer- skewness data set - Answer- numerical values, measurements, observations, or survey responses. valid data - Answer- result from test that accurately measures what it was intended to measure. numerical summary - Answer- number used to describe a specific characteristic about a data set. measure of central tendency - Answer- summary measure used to describe an entire set of data with one value that represents the middle or center of the data set's distribution; mean, median, or mode. measures of the center - Answer- mean, median, mode median - Answer- resistant measure of center Interquartile Range - Answer- measures difference between the 3rd and 1st quartile. Standard Deviation - Answer- how far, on average, the data points are from the mean. five-number summary - Answer- min, max, median, 1st quartile, 3rd quartile in a set of data. Standard Deviation Rule - Answer- 68% of data will fall within 1 SD of the mean, 95% will fall within 2 SD of mean, and 99.7% will fall within 3 SD of mean, 0.15% will fall below 3SD. Standard deviation must be smaller than the range. - Answer- Tru