Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
18 Cards in this Set
- Front
- Back
|
statistics |
science of gathering, describing, and analyzing data. |
|
|
data |
counts, measurements, observations gathered from a population. |
|
|
population |
the group of interest. |
|
|
variables |
values that change among population. |
|
|
census |
data gathered from every member of pop. |
|
|
parameter |
calculated value from data pop. |
|
|
sample |
part of pop. |
|
|
statistic |
calculated value from sample. |
|
|
quantitative data |
numerical (counts, measurements) -both discrete and continuous |
|
|
qualitative data |
descriptive, traits -neither discrete and continuous |
|
|
continous data |
quantitative that cane take on any value in an interval. |
|
|
discrete data |
qualitative data |
|
|
random sample |
every member of pop. has an equal chance of being selected )only selecting one) |
|
|
simple random sample |
a sample in which each group of size "N" has an equal chance of being selected. |
|
|
stratified sample |
divide pop. into groups(strata), then take a few (simple random sample) from each group. Ex: picking a random amount of people from each group |
|
|
cluster sample |
divide pop. into groups(cluster), select all members from a few groups. ex: selecting groups |
|
|
systematic sample |
one in which you select every Kth member from pop. ex: picking every 8th person |
|
|
convenience sample |
one that is "convenient" to researcher. |
