ISDS exam 1 questions with complete solutions 2024/2025
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Course
ISDS
Institution
ISDS
ISDS exam 1 questions with complete solutions 2024/2025
descriptive statistics - ANSWERScollecting, organizing, and presenting the data
inferential statistics - ANSWERSdrawing conclusions about a population based on sample data from that population
population - ANSWERSconsists of all ite...
discrete - ANSWERSvariable assumes a countable number of distinct values (ex. number of children in a
family, number of points scored in a basketball game)
, continuous - ANSWERSvariable can assume an infinite number of values within some interval (ex. weight,
height, investment return)
nominal scale - ANSWERSdata are simply categories for grouping the data
ordinal scale - ANSWERSthere is no objective way to interpret the difference between instructor quality
(ex. instructors are evaluated by excellent, good, fair, poor)
interval scale - ANSWERSno absolute 0 or starting point defined
ratio scale - ANSWERSdata may be categorized and ranked, there is an absolute 0 (ex. weight, time,
distance)
frequency distribution - ANSWERSfor qualitative data, groups data into categories and records how many
observations fall into each category
relative frequency - ANSWERScalculate by dividing each category's frequency by the sample size
cumulative frequency distribution - ANSWERSspecifies how many observations fall below the upper limit
of a particular class
relative frequency distribution - ANSWERSidentifies the proportion or fraction of values that fall into
each class
cumulative relative frequency distribution - ANSWERSgives the proportion or fraction of values that fall
below the upper limit of each class
histogram - ANSWERSa visual representation of a frequency or relative frequency distribution (bar graph)
polygon - ANSWERSa visual representation of a frequency or a relative frequency distribution (line graph
that starts and ends on y axis)
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