PSY 295 Exam 1 Questions With Verified
Answers
The size of the sample influences 2 critical things - answer-the answer you get from a larger
sample is closer to the true answer
-the answer you get from repeated sampling is more consistent with larger samples
statistics - answera set of mathema...
The size of the sample influences 2 critical things - answer✔✔-the answer you get from a larger
sample is closer to the true answer
-the answer you get from repeated sampling is more consistent with larger samples
statistics - answer✔✔a set of mathematical procedures for organizing, summarizing, and
interpreting info
population - answer✔✔the entire set of individuals of interest for a particular research question
sample - answer✔✔a set of individuals selected from a population, usually intended to represent
the population in a research study
variable - answer✔✔a characteristic or condition that changes or has different values for
different individuals
datum - answer✔✔single measurement or observation
data - answer✔✔multiple datum
data set - answer✔✔a collection of data relevant to a research question
observation - answer✔✔the basic unit from which variables are measured
statistic - answer✔✔a value, usually numerical, that describes a sample
parameter - answer✔✔a value, usually numerical, that describes a population
descriptive stats - answer✔✔statistical procedure used to summarize, organize, and simplify data
inferential stats - answer✔✔techniques that allow us to study samples and then make
generalizations about the populations from which they were selected
sampling error - answer✔✔the naturally occurring discrepancy, or error, that exists between a
sample stat and the corresponding population parameter
research methods - answer✔✔the particular type of statistical procedures you use, both
descriptive or inferential, that depend on the nature of your research question
EXAM STUDY MATERIALS July 23, 2024 4:26 PM
, correlational method - answer✔✔2 different variables are observed to determine if there is a
relationship between them
key limitation of correlational method - answer✔✔cannot demonstrate a cause and effect
relationship
experimental method - answer✔✔one variable is manipulated while another is observed and
measured
N - answer✔✔# of individuals in a population
n - answer✔✔the # of individuals in a sample
discrete variable - answer✔✔Consists of separate, indivisible categories. No values can exist
between two neighboring categories.
continuous variable - answer✔✔there are an infinite number of possible values that fall between
any two observed values. A continuous variable is divisible into an infinite number of fractional
parts.
nominal scale - answer✔✔a set of categories that have different names and categorize
observations but don't make any quantitative distinctions between observations
-college major
ordinal scale - answer✔✔a set of categories that are organized in an ordered sequence
-measurements rank observations in terms of size or magnitude
-olympic medals
interval scale - answer✔✔ordered categories that are all intervals of exactly the same size
-equal differences between #s on the scale reflect equal differences in magnitude
-zero point on scale is arbitrary and doesn't indicate a zero amount of the variable being
measured
-degrees fahrenheit
ratio scale - answer✔✔an interval scale with the additional feature of an absolute zero point
-dollars
-height and weight
frequency distribution - answer✔✔an organized tabulation showing the number of individuals
located in each category on the scale of measurement
EXAM STUDY MATERIALS July 23, 2024 4:26 PM
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