Stats quiz 1
Chaps 1-3
Chaps 1-3
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Lernkarten
develop methods for decision-making derived from smaller sets of data
William S. Gosset
developed Fisher's test used in the analysis of variance
Sir Ronald Fisher
a single figure that is representative of the general level of magnitudes of the items in a set of data
measure of central tendency or position or location
arithmetic average of all the scores
mean
most frequent score
mode
central value that divides the ordered data samples into 2
median
describes distance of the score from the median
measure of variability
distance from the middle
how far above or below from the mean
standard deviation
same as standard but square root is not taken
variance
distance between the highes and lowest
range
to describe group characteristics by collection of summarizing data
descriptive stats
to describe a population by studying a random sample
inferential stats
should come from a population with normal distribution
parametic stats
does not require any assumption
nonparametic stats
person-to-person method
direct or interview
written responses
indirect or questionnaire method
enforced by law
registration method
observe behavior
subjects cannot talk or write
observation method
determine cause and effect
experiment method
effect, criterion, result
dependent
cause, predictor, determinant or correlate, contolling
independent
variable being analyze
experimental var
var which is increase, reduced, added or removed
manipulated var
constant var
controlled
var that is not the main focus
moderator
var that is not mentioned in the prob or hypo but is studies
intervening
var that the researcher cannot control
extraneous
variables with varying degrees of precision
continuous
variables with definite values
discrete or discontinuous
does not represent a quantity
nominal scale
scale with detectable differing degree
ordinal scale
scale usually seen in ranges or intervals
interval scale
scale that uses percentages
ratio scale
map graph aka _________
cartogram
category defined by lower and upper limits
class intervals/limits
true limits
value midway the upper and lower
class boundaries
class width
difference between 2 successive lower or upper limits
class size
number of observations
class frequency
average of upper and lower class limits
midpoint of class interval
class mark
bar graph of frequency vs class marks
histogram
