# Descriptive Statistics Flashcards

## patingin ng big deck

- Used in Descriptive studies
- Means of describing the nature and characteristics of the event under investigation

Descriptive Statistics

what is the initial step in data analysis of ANALYTIC RESEARCH?

Descriptive statiscs

Dadaan muna ng descriptive Statistics → inferential → analytic

Purpose of Descriptive statistics

just make uhmmm feel it

- presenting of data
- Summarizing data

Descriptive Statistics

Give the examples of summarizing data

familiarize lang vebs, wag pahirapan sarili

- Statistical tables
- Statistical graphs
- Measures of Central Tendency (quantitative)
- Measures of Dispersion or Variability (quantitative)
- Measures of Position or Location (quantitative)
- Rates and Ratios (Proportion - Quali)
- Frequency Distribution (Table with frequency - Quali )

FAMILIARIZE! para di kabahan dughan

These are measures that describe a typical or representative value in a group of observations.

Measures of Central Tendency

Measures of Central Tendency

What are the types of presentations:

- Mean
- Mode
- Median

Layman’s concept of “average”

=

mean

Population mean -

Sample mean –

Population mean – μ

Sample mean – x (eto lagi mas cinocompute)

If u see this card

Familiarize the formula of mean

Measures of Central Tendency

- Center of gravity in a set of observations
- Sensitive to extreme values

Mean

Measures of Central Tendency

if there is OUTLIER in a mean, what will happen?

the mean is swayed towardsthe extreme side

Measures of Central Tendency

Used especially when other statistical techniques like tests of hypothesis are to be applied to the data

Mean

Measures of Central Tendency

T or F

mean is the least common measure for central tendency?

F

it is bobo ka ha :P

Mean - T or F

Not easy to understand, and complex to calculate

F

EASY and SIMPLE

Mean - T or F

Based on all the values and rigidly defined

T

Mean - T or F

It is easy to understand even if some of the details of the data are lacking

T

diko rin alam accrding kay polly to

Mean - T or F

Based on the position in the series?

F

NOT BASED - icocompute lahat eh

Mean - T or F

Easy to locate in the graph

F

Cannot be located graphically

Mean

What is the bias of MEAN?

JENO - eme UPWARD

What conclusion does mean gives?

Misleading conclusion

Measures of Central Tendency

Middlemost value in a set of observations whose magnitudes have been ordered or arrayed.

Median

What is the cardinal rule in MEDIAN?

should be in CHRONOLOGICAL ORDER

Median - T or F

Very sensitive to extreme values

F

kaya mas favored to kesa sa mean dahil yung GITNA tinitignan

What central tendency is used when distribution are markedly skewed?

Median

If u see this card

SHAKE THAT PHAT ASSS

ene familiarize median location formula

Median

If n is odd, what is the median?

Middle