Basic Statistics Crossword

a subset of the population from which raw data are actually obtained
the complete set of people or things being studied
placebo __________ refers to the situation in which patients improve because they believe they are receiving a treatment
the measure of accuracy of a properly conducted statistical study
___________ group members who do NOT receive the treatment
____________ group is the group of sample members that receive a treatment
____________ sample is one where each unit in the population has an equal chance of being selected for the sample
a study that resembles an experiment because the sample naturally divides into two groups
a study in which neither the participant nor the researcher know who is in the treatment group
participants do not know whether they are a member of the treatment group
all of the data collected in a study
_____________ variables are not intended to be part of the study and can make if difficult to interpret results
tendency to favor certain results
gives approximately the same results time after time
lacks the active ingredient of a treatment being tested
___________ sampling is to divided the population into strata and take a random sample of each stratum
the science or collecting, organizing, and interpreting data
in an ____________, researchers apply a treatment
__________ sampling is choosing every nth person on a list
____________ sampling uses results that are readily available
in an ___________ study researchers observe or measure characteristics of the sample but do not influence or modify
population ___________ are specific characteristics of the population that a statistical study is designed to estimate
a measurement that actually measures what it claims to measure
the most common measure of central tendency that is also referred to as average
middle value in an ordered data set
the difference in Q3 and Q1
the difference in the largest and smallest data values
a common measure of spread or variation in a data set