Stat 250 Set 1

Front 1

collection of procedures and principles for gathering data and analyzing information when faced with uncertainty

Back 1

statistics

Front 2

used to make conclusions about populations from samples

Back 2

statistics

Front 3

clinical trials are this kind of statistic

Back 3

biostatistic

Front 4

all observations that are of interest to the researcher

Back 4

population

Front 5

the observations that are actually obtained by the researcher, a subset of the population

Back 5

sample

Front 6

denoted by n

Back 6

sample size

Front 7

numbers and category labels that have been collected but have not yet been processed

Back 7

raw data

Front 8

why do we use samples?

Back 8

populations are too large
measuring process might destroy data

Front 9

used to summarize raw data into tables, graphs, and numerical summaries

Back 9

descriptive statistics

Front 10

making conclusions about the population

Back 10

inferential statistics

Front 11

characteristics that vary from one individual to the next

Back 11

variables

Front 12

when the outcome is unpredictable

Back 12

random circumstance

Front 13

assigns a number or symbol to each outcome of a random circumstance

Back 13

random variable

Front 14

variable that can only result ina countable set of possibilites

Back 14

discrete random variable

Front 15

variable that cannot take any possible value in an interval

Back 15

discrete random variable

Front 16

variable that can take on any value in an interval or in a collection of intervals

Back 16

continuous random variable

Front 17

variables that have some form of grouping or classification

Back 17

categorical

Front 18

categorical variable where groups or categories have a natural ordering

Back 18

ordinal

Front 19

consist of numerical values taken on each individual

Back 19

quantitative

Front 20

variables of which we want to determine the outcome

Back 20

response variables

Front 21

variables that partially explain the value of the response variable for the individual

Back 21

explanatory variables

Front 22

large enough to be unlikely to have occurred in the observed sample if there is no relationship in the population

Back 22

statistically significant relationship