STATISTICS

CREATED BY : DIAJENG PUTRI SUCIUTAMI NIDIYA DWIAHENDI DARYANA

WISI UNGGUL PERTIWI

• Statistics is a study or scientific method of collecting,organizing,processing,presenting,analyzing,data and drawing a conclusion according to the result of data analysis.

• Collection of the data is the beginning stage in the statistical activity. Collecting data can be performed by interview of questionnaire,then continued by one of the following activities ,like counting,measuring,recording data by tallies.

• QUANTITATIVE data are obtained from the result of numerical recording(in the form of figures)

• QUALITATIVE data are data related to the category of characteristics of an object.

TWO TIPES OF STATISTICA DATA

• MEAN of data set is the sum of all data values divided by the number of data

• MODE is the value that occurs most frequently

• MEDIAN is a measure of central tendency used to analize data.

MEASURES OF CENTRAL TENDENCY

We try survey in class VII A about what they are open, used, websites on the internet and how often they are opened internet and how many times they went to the Warnet.

AND THE RESULT IS

“HOW OFTEN YOU OPEN INTERNET IN A DAY?”

DATA TALLY FREQUENCY

X.F

1 IIII IIII IIII 15 15

2 IIII 5 10

3 IIII 4 12

5 II 2 10

MEAN = SUM OF ALL VALUES NUMBER OF DATA

= 15+10+12+10 15+5+4+2 = 47 26 = 1.8MODE = 1MEDIAN = 26 2 = 13

MEAN,MODE,MEDIAN OF THE FIRST QUESTION

Once58%Twice

19%

Three times15%

Four times8%

THE RESULT IN PIE CHART

“HOW OFTEN DO YOU USE INTERNET A

DAY ?”

DATA TALLY FREQUENCY F.X

NEVER(1) IIII IIII 9 9SELDOM(2) IIII IIII IIII 15 30OFTEN(3) II 2 6

MEAN = SUM OF ALL VALUES NUMBER OF DATA = 9+30+6 9+15+2 = 45 26 = 1.7MODE = SELDOM (2)MEDIAN = 22.5 +23.5 2 = 23 = 2

MEAN,MODE,MEDIA OF THE SECOND QUESTION

Never64%

Seldom25%

Often11%

Sales

THE RESULT IN PIE CHART

“WHAT YOU USED WHEN YOU OPEN THE INTERNET”

DATA TALLY FREQUENCY F.X

LAPTOP/COMPUTER(1)

IIII IIII IIII III 18 18HANDPHONE(2) IIII III 8 16

MEAN = SUM OF ALL VALUES NUMBER OF DATA = 18+16 18+8 = 34 26 =1.3MODE = LAPTOP/COMPUTER(1)MEDIAN = 34 2 = 17 = 1

MEAN,MODE,MEDIAN,OF THE THIRD QUESTION

Laptop/Computer

69%

Handphone31%

Sales

THE RESULT IN PIE CHART

DATA TALLY FREQUENCY F.X

FACEBOOK(1) IIII IIII IIII IIII III 23 23

TWITTER(2) IIII IIII II 12 24

YOUTUBE(3) IIII IIII I 11 33

GAME ONLINE(4) IIII IIII IIII II 17 68

FOR HOMEWORK(5)

IIII IIII 9 45

SEARCH INFORMATION(6)

IIII IIII III 13 78

DETIK.COM(7) II 2 14

WHAT WEBSITE YOU OFTEN OPEN IF YOU USE INTERNET?”

WIKIPEDIA(8) II 2 16

YAHOO MESSANGER(9)

II 2 18

MEAN = SUM OF ALL VALUES

NUMBER OF DATA

=23+24+33+68+45+78+14+16+18

23+12+11+17+9+13+2+2+2

= 319

91

= 3,5

MODE = FACEBOOK (1)

MEDIAN = 159,5+160,5

= 32O

= 320

2

=160

= 5

MEAN,MODE,MEDIAN OF THE FOURTH QUESTION

Facebook25%

Twitter13%

Youtube12%

Game Online19%

For Homework10%

Search Infor-mation

14%

Detik.com2%

Wikipedia2%

Yahoo Messenger2%

THE RESULT IN PIE CHART

“DO YOUR PARENTS KNOW IF YOU OFTEN OPEN INTERNET ?”

DATA TALLY FREQUENCY F.X

KNOW (1) IIII IIII IIII IIII IIII

25 25

DIDN’T KNOW(2)

I 1 2

MEAN = SUM OF ALL VALUES NUMBER OF DATA = 25+2 26 = 1.04MODE = KNOW (1)MEDIAN = 27 2 = 13.5 Median = 1

MEAN,MODE,MEDIAN OF THE FIFTH QUESTION

Know96%

Didn't Know4%

THE RESULT IN PIE CHART

The Man Who Says He Never Has Time Is The Laziest Man.

(Lichtenberg)By learning to obey we know to

command.

THANKS FOR YOUR ATTENTION