stat ch 1
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study of methods to describe and measure aspects of nature sample is
process of inferring an unknown quantity of a target population using sample data is knonw as?
quantity describing a population is known as ?
related quantity calculated from a sample is knonw as?
statistic or estimate
all individual units of interest
subset of units taken from the population
difference between an estimate and population parameter being estimated caused by chance is?
if values we obtained are tightly grouped and highly repeatable, they are said to be ?
In random sample..?
each member of a population has an equal and independent chance of being selected.
what minimizes bias and makes it possible to measure the amount of sampling error?
A sample of convenience is?
a collection of individuals that are easily available to the researcher
characteristics that differ among individuals
name types of variables?
Categorical variable describes?
Qualitative characteristics of individuals that do not correspond to degree of difference on a numerical scale.
Numerical data ( variable is) ?
quantitative measurements that have magnitude on a numerical scale.
frequency distribution is?
describes the number of times each variable accrues in the sample.
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