Statistics Complete Study Guide Actual Questions And Detailed Answers.
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Course
STATISTIC.
Institution
STATISTIC.
A characteristic or condition that changes or has different values for different individuals - correct answer Variable
measurements or observations - correct answer Data
Collection of measurements or...
A characteristic or condition that changes or has different values for different individuals - correct
answer Variable
measurements or observations - correct answer Data
Collection of measurements or observations - correct answer A data set
A singular measurement or observation and is commonly called a "score" or "raw score" - correct
answer Data
A parameter is a value-usually a numerical value- that describes a population. A parameter is usually
derived from measurements of the individuals in the population.
A statistic is a value-usually a numerical value- that describes a sample. A statistic is usually derived from
measurements of the individuals in the sample. - correct answer Parameter vs
statistic
statistical procedures used to summarize, organize, and simplify data - correct answer
Descriptive Statistic
consist of techniques that allow us to study samples and then make generalizations about the
populations from which they were selected - correct answer Inferential
statistics
the naturally occurring discrepancy, or error, that exists between a sample statistic and the
corresponding population parameter - correct answer Sampling error
internal attributes or characteristics that cannot be directly observed but are useful for describing and
explaining behavior. - correct answer Constructs
, Consists of separate, indivisible categories. No values can exist between two neighboring categories.
Commonly restricted to whole, countable numbers. - correct answer Discrete
variable
There are infinite number of possible values that fall between any two observed values. A continuous
variable is divisible into an infinite number of fractional parts. For example weight because it should be
very rare to obtain identical measurements for two different individuals. - correct answer
Continuous variable
consists of a set of categories that have different names. Measurements on a nominal scale label and
categorize observations, but do not make any quantitative distinctions between observations. Think of
grouping people into different categories such as subject - correct answer
Nominal scale
consists of a set of categories that are organized in an ordered sequence. Measurements on an ordinal
scale rank observations in terms of size or magnitude. Think of the sequence: first, second, third, or
fourth - correct answer Ordinal scale
Values that express consistent magnitude between each value. Ratio data possess an absolute zero
value. Interval data do not possess an absolute zero. - correct answer Interval
and ratio scale
Involves measuring one or more separate variables for each individual with the intent of simply
describing the individual variables
Think of a study of numerical values like the number of hours spent studying every day - correct answer
Descriptive research
two sets of variables are examined to determine whether they are associated or "correlated" - correct
answer Correlational research
one variable is manipulated while another variable is observed and measured. To establish a cause-and-
effect relationship between the two variables, an experiment attempts to control all other variables to
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