Semester Exam Vocabulary Review

A ______________ consists of all subjects are being studied.

• hypothesis testing

• sample

• population

• null hypothesis

___________________ is a decision-making process for evaluating, claims about a population based on information obtained from samples.

• hypothesis testing

• random variable

• statistic

• parameter

When data are collected in original form, they are called ___________.

• numbers

• raw data

• discrete variables

• continuous variables

The ___________________ is the number of values in a specific class of distribution.

• class limit

• class boundary

• frequency

• percentile

A _______________ is the midpoint in a data array.

• mean

• mode

• range

• median

The ________________ is the average of the squares of the distance each value is from the mean.

• slope

• variance

• mean

• standard normal curve

A(n) ____________________________ is another term which can be used to describe an approximately bell shaped curve.

• binomial distribution

• approximately normally distributed

• symmetry

• chi squared distribution

In a _________________________, the researcher merely observes what is happening or what has happened in the past and try to draw conclusions.

• observational study

• random sampling

• experimental study

• confounding variable

A ____________ is used to represent a frequency distribution for a categorical variable, and the frequency are display by the heights arranged from highest to lowest.

• time series graph

• histogram

• pie graph

• pareto chart

What value is not included in the 5 number summery (aka box and whiskers plot)

• minimum

• mean

• median

• maximum