Unit 1 Stats Vocal

quantitative

numerical measurement

statistics

study of how to collect, organize and analyze data

qualitative

describes an individual by placing the Individual into a category or group

population

you get data from every individual of interest

nominal

category data or names

ordinal

data that can be arranged in order

interval

meaningful zeros (time,temperature)

ratio

all meaningful numbers

descriptive statistics

involves methods of organizing, picture, and summarizing information from samples or population

observational study

observations are conducted in a way that doesn’t change the response or predictions regarding the population

experiment

a treatment is deliberately imposed on the individuals in order to observe a possible change in the response or variable being measured

operational

states the fact procedure used to represent a concept

observation

based on empirical evidence

simple random sample

everyone in the population has an equal chance of being selected

random number table

random starting point

stratified sampling

look at different groups of classes

systematic sampling

every nth person

cluster

randomly select sections from a demographic

convenience

data that is easily obtained

independent

conditions that are altered or varied by the experimenter

dependent

measure the results of the experiment (depends on the independent variable)

control group

ex- doesn’t get light exposed to the plant

experimental group

ex-gets light exposed to the plant

double blind

neither experimenter or subject know what the condition they are in