BIOSTATISTICS BCPS PRACTICE TEST QUESTIONS WITH DETAILED ANSWERS // 100% GUARANTEED PASS A+ GRADED
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Course
BCPS
Institution
BCPS
Discrete Variables - ANS Can only take a limited number of values within a given range.
1. Nominal
2. Ordinal
Nominal Data - ANS Discrete Variable
Data of categories only, unordered, with no indication of relative severity. Data cannot be arranged in an ordering scheme. (Gender, Rac...
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BIOSTATISTICS BCPS PRACTICE
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TEST QUESTIONS WITH
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DETAILED ANSWERS // 100%
GUARANTEED PASS A+ GRADED
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, Discrete Variables - ANS Can only take a limited number of values within a given range.
1. Nominal
2. Ordinal
Nominal Data - ANS Discrete Variable
Data of categories only, unordered, with no indication of relative severity. Data cannot be
arranged in an ordering scheme. (Gender, Race, Religion, mortality, disease state)
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Ordinal Data - ANS Discrete Variable
Placed in categories and rank ordered, distance between categories may not be the same. Ex:
pain is low, moderate, high
Continuos Variables - ANS Variable that can have unlimited number of possible values; can
take on any value within a given range. Ex.
1. Interval
2. Ratio
Interval Data - ANS Continuous Variable lo
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Data are ranked in a specific order with a consistent change in magnitude between units; zero
point is arbitrary (degrees Fahrenheit)
Ratio Data - ANS Continuous Variable
Interval data with an absolute zero (degrees Kelvin, HR, BP, time, distance)
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Mean - ANS The arithmetic average of a distribution, obtained by adding the scores and then
dividing by the number of scores. Should only be used with Continuous and normally distributed
data. Very sensitive to outliers
Median - ANS A value found by ordering a group of data from least to greatest and choosing
the middle value of the group. Also called the 50th percentile. Can be used with Ordinal and
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Continuous data. Insensitive to outliers.
Mode - ANS The number that occurs most often in a set of data
Standard Deviation - ANS A measure of variability that indicates the average difference
between the scores and their mean. Use only for continuous data that are normally distributed.
+/- 1 SD = 68% of sample values, +/- 2 SD = 95% of sample values, +/- 3 SD = 99% of sample
values
Coefficient of Variation - ANS A measure of dispersion calculated by dividing a distribution's
standard deviation by its mean. SD/meanX100%
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