Page 4 - Math SL HB Sem 3

Statistics And probability

6-l : CONCEPTS OF POPULATIONSAMPLE,RANDOM
SAMPLE AND
FREQUENCY DISTRIBLTTION OT.OTSCNEru A-NN i6NTTNUOUS NArA

Slatistics:

.
Statistics deals rvith the collecting. anallzing,presenting
and inrerpreting of
data to enable us to make decrrons_

I):rta Colleclion-

Population
Sample Analysis
Sarnpling Descriptiofr
Process

't-y pcs of Data

-Iypes
of Data

(Va ria bles)

Quantitative
Qualitativc

conrinuous Discrere @,&d (e .7"u*o-)
g
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Statistics deals with data collection, organisation, analysis and interpretation. lt offers great tools for us
to understand real life situations. Predictions or solutions to an observed problem can then be devised.

Statistical concepts & terms to know:

1) Population - a collection of objects.
2) Sample - a selection of objects from the population.

2) Random Sample - sample for which all possible
seleclions of objects are equally likely.
2) Data - the measurements or observations of some quantities
- two types: a) discrete (only takes specific numerical values)
either be
b) continuous (can take any numerical values) grouped OR ungrouped

(t