COMPREHENSIVE EXAM SCRIPT 2026 SOLVED
QUESTIONS WITH CORRECT ANSWERS
◉ Purpose of statistics. Answer: to draw scientific conclusions for
research (scientific inferences)
◉ Random noise. Answer: data variation that is not accounted for by
factors considered in the analysis
◉ Continuous vs discrete. Answer: Continuous = data on a
continuum, can be any real value
Discrete = 1, 2, 3, etc
◉ 2 things statistical theory is concerned about. Answer: 1)
Experimental design (needs accuracy/foresight)
2) Data analysis
◉ What is a successful statistical study?. Answer: One with accurate
conclusions
◉ Population. Answer: complete collection of subjects of interest in
the study
, ◉ Case. Answer: An individual unit (person or other) being studied
◉ Variable. Answer: A characteristic or attribute that can assume
different values
◉ Sample. Answer: a subset of the population
◉ Data. Answer: collection of observations of various kinds
◉ Metadata. Answer: Data about data
◉ Statistics. Answer: The science of conducting studies to collect,
organize, summarize, analyze, and draw conclusions from data
◉ Census. Answer: Collection of data from every member of the
population of interest
◉ What is bad about voluntary response based studies?. Answer:
The population is self-selecting, so data is less likely to be valid
◉ Statistical significance. Answer: Measure of whether or not
something is likely to have occurred by chance