MY VOCAB PROJECT

coy sumlar

SURVEY OF STATISTICS

A survey is an investigation

about the characteristics of a

given population by means of

collecting data from a sample of

that population and estimating

their characteristics through the

systematic use of statistical

methodology.

SURVEY OF STATISTICS

Example: survey of major league baseball players

hitting stats who do vs. don’t use steriods.

UNIVARITIVE DATA

Data for one variable

Example: Travel Time (in minutes): 15, 29, 8, 42, 35, 21,

18, 42, 26

The data is for the variable Travel Time

(If you have two sets of data, such as ice cream sales vs

temperature, it is called "Bivariate Data")

SURVEY QUESTION

Web term: a sentence of inquiry that asks for a reply.

Survey questions can be of different types and serve

to gather different sets of data.

COYS TERM: So basically A QUESTION THAT

SIMPLY as for a answer, so its non rhetorical. This

question can be put in to many different forms or

statements.

SPREAD

A measure of spread tells us how much a data sample

is spread out or scattered. We can use the range and the

interquartile range to measure the spread of a sample.

Measures of spread together with

measures of location (or central tendency) are important

for identifying key features of a sample to better

understand the population from which the sample comes

from.

NATURAL VARIABILITY

Variability definition, apt or liable to vary or

change; changeable: variable weather; math's. a. an

expression that can be assigned any of a set of

values ... weather events occur in the context of

natural variability and the changing climate.

HISTOGRAM

histogram is a graphical representation of the

distribution of data. It is an estimate of the

probability distribution of a continuous variable and was

first introduced by 1] A histogram is a representation of

tabulated frequencies, shown as adjacent rectangles,

erected over discrete intervals (bins), with an area equal

to the frequency of the observations in the interval.

TREATMENT

: the way that you think of and act toward someone

or something

: the way that you deal with or discuss a subject

: something that deals with or discusses a subject.

NON-RESPONSE BIAS

NON-RSPONSE BIAS occurs in statistical surveys

if the answers of respondents differ from the

potential answers of those who did not answer.

DIRECT DIFFRENCE IN A RESPONSE BIAS!!!!

HYPOTHESIS

A statement that is predicted to be true but you

run a test to see if it is in fact true or not.

SAMPLING

A selection taken from a larger group (the

"population") so that you can examine it to find out

something about the larger group. For example if a

baseball stats analysis who studied all three major

parts of baseball (hitting,pitching,fielding) just

studied Hitting statistics that would be a example of

sampling.

STATISTICAL DATA

Bias: Bias is a general statistical term meaning

a systematic (not random) deviation from the true

value. A bias of a measurement or a sampling

procedure may pose a more serious problem for

researcher than random errors because it cannot

be reduced by mere increase in sample size and

averaging the outcomes.

STATISTICS CHART

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NON EXAMPLES

UNIVARITIVE DATA

NOPE! NOPE!

!!!!FAIL!!!

SURVEY OF STATISTICS

SPREAD