Statistics_scales and Sampling Techniques

7/27/2019 Statistics_scales and Sampling Techniques

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BASI

STATIST


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C

SCALES OF MEASUREMENT

NOMINAL LEVEL

Is characterized by data that consists ofnames, labels, or categories only.

We can only say that one is different fromanother, but the amount of that differencebetween them cannot be determined.

e.g. Gender, nationality, and civil status.


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ORDINAL LEVEL

Involves that the data may be arranged insome order but differences between datavalues either cannot be determined or are

meaningless.

We can say that one is better or greater thanthe other, but we cannot tell how much more

or how much less of the characteristic of onehas than the other.

e.g. Ranking of contestants in a beautycontest, siblings in a family and ranking of

honor students.


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RATIO LEVEL

It is like the interval level. The only differencethat the ratio level always start from anabsolute or true zero point.

We can say that one object is so many time aslarge or as small as the other.

e.g. weight and height


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NOMINAL ORDINAL

INTERVAL RATIO

RELIGIONGOOD, BETTER AND BESTAGEA, B, C, D, E GRADESROOM TEMP. IN CIQ SCORESSPEED OF CARZIP CODESROOM TEMP. IN KELVIN


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TYPES OF SAMPLES

RANDOM SAMPLE/ING

Each member of the population has an equallylikely chance of being selected.

e.g. All studio audience were ask to submit theirown cell phone number.

CONVENIENCE SAMPLE/ING

It is the sample that is easy for the researcher.

e.g. Getting data from a class or an institutionthat is easily accessible to the researcher.


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TYPES OF SAMPLES

STRATIFIED RANDOM SAMPLE/ING

Based on a strata, the population is subdividedinto subgroups, so that each population memberis only one subgroup.

e.g. A researcher surveys all students from eachof the 4 year levels randomly.

CLUSTER SAMPLE/ING It consists of items in a group such as a

neighborhood or a household.

e.g. Grouping a population into subgroups.


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TYPES OF SAMPLES

SYSTEMATIC SAMPLE/ING

Obtained using an ordered list of population.

e.g. Given is 100 students, the 5th,10th, 15th, 20th

were chosen as sample.


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PROJECT:1. Think of a survey question that is answerable

by the your given choices. At least threechoices.

2. Create survey forms for data gathering.

3. Gather data depending on what sampling

technique your group prefer. e.g. random

sampling.

NAME: _____________________________ YEAR/SEC: ______________

What is your favorite Philippine TV channel?(Put a check () on your answer)

( ) GMA 7 ( ) ABS-CBN 2 ( ) TV 5


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4. Consolidate the data.

5. Illustrate the data using a BAR GRAPH, PIE

GRAPH AND A PICTOGRAPH:

0

5

10

15

20

25

ABS -CBN 2 TV 5 GMA 7

PREFERRED PHILIPPINE TV CHANNEL OF

50 RANDOMLY SELECTED LMSI STUDENTS


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36%

24%

40%

PREFERRED PHILIPPINE TV

CHANNEL OF 50 RANDOMLY

SELECTED LMSI STUDENTS

ABS -CBN 2

TV 5

GMA 7


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ABSCBN 2

TV 5

GMA 7

= five persons

PREFFERED PHILIPPINE TV

CHANNEL OF 50 RANDOMLY

SELECTED LMSI STUDENTS


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6: Choose a title for your survey.

7. Put the title in the center.

8. The brief description of the survey .What is the survey all about?

How it was conducted?

What sampling technique was used?

9. Names of the members

Statistics_scales and Sampling Techniques

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