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STATISTICS MATH ASSIGNMENT IX D Kirana Ayu Imani Siska Mutiara Niluh Putu Citra Dewi Zahra Nabilah

Statistic assignment (muti rara zara citra)

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Statistic Assignment siska mutiara, Kirana ayu imani, zahra nabilah, niluh putu citra dewi IX D

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Page 1: Statistic assignment  (muti rara zara citra)

STATISTICSMATH ASSIGNMENT

IX D• Kirana Ayu Imani

• Siska Mutiara• Niluh Putu Citra Dewi

• Zahra Nabilah

Page 2: Statistic assignment  (muti rara zara citra)

What Is Statistics ?• Statistics is the science or scientific method of collecting, organizing,

processing, presenting and analyzing data and drawing conclusion according to the result of the data analysis.

• Statistics is the study of statistics from a mathematical standpoint, using probability theory as well as other branches of mathematics such as linear algebra and analysis. The term "mathematical statistics" is closely related to the term "statistical theory" but also embraces modelling for actuarial science and non-statistical probability theory.

• Statistics is the science of collecting, organizing and summarizing data such that valid conclusions can be made from them. The collecting, organizing and summarizing part is called “descriptive statistics”, while making valid conclusions is inferential statistics.

Page 3: Statistic assignment  (muti rara zara citra)

Collection of Data

• Collection of the data is the beginning stage (the first step) in the statistical activity. Collecting data can be performed by interview of questionnaire,then continued by one of the following activities :1. Counting2. Measuring3. Recording data by tallies

Page 4: Statistic assignment  (muti rara zara citra)

Two Types Of Statistica Data

• 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.

Page 5: Statistic assignment  (muti rara zara citra)

Measure Of Central Tendency• MEAN (arithmetic mean)

Mean of data set is the sum of all data values divided by the number of data

• MODE Mode is the value that occurs most frequently

• MEDIANMedian is measure of central tendency used to analyzed data.

Page 6: Statistic assignment  (muti rara zara citra)

Formula

• MEANmean( x ) = sum all value ( ∑n )

number of data (n)• MODE

Mode = the value of highest frequency• MEDIAN

Median = middle value after being ordered• RANGE

Range = the highest score – the lowest score

Page 7: Statistic assignment  (muti rara zara citra)

For Example4,3,7,6,5,4,8,7,6.Mean = 1+3+4+4+5+6+7+7+8

9=5

Median = 1,3,4,4,5,6,7,7,8=5

Mode = 4 and 7Range = 8 – 1

=7

Page 8: Statistic assignment  (muti rara zara citra)

We had tried to survey about “ How Much Your Daily Pocket Money ?”

And“ How Long Your Time To Study ?”

In grade VII A , Total students is 30.

And the result is …

Page 9: Statistic assignment  (muti rara zara citra)

“ How Much Your Daily Pocket Money ?”

A. Rp 5,000,- = 1 personB. Rp 10,000,- = 11 personC.Rp 15,000,- = 18 person

Lets try to measure the centraltendency !

Page 10: Statistic assignment  (muti rara zara citra)

Data Tally(ies) Frequency X.F5,000 I 1 5,000

10,000 IIII IIII I 11 110,000

15,000 IIII IIII IIII III 18 270,000

Total : 30 385,000

Mean = 385,000 30

= Rp 12,833,-Median = 15,000Mode = 15,000Range = 15,000 – 5,000

= 10,000

Page 11: Statistic assignment  (muti rara zara citra)

The Result In Pie Chart

Page 12: Statistic assignment  (muti rara zara citra)

“ How Long Your Time To Study ?”

A. 1 hour = 4 personB. 2 hours = 15 personC.3 hours = 11 person

Lets try to measure the centraltendency !

Page 13: Statistic assignment  (muti rara zara citra)

Mean = 67 30 = 2,23 hours / 133,8 minutesMedian = 2 hoursMode = 2 hoursRange = 3 – 1

= 2 hours

Data Tallies Frequency X.F1 hour IIII 4 4

2 hours IIII IIII IIII 15 30

3 hours IIII IIII I 11 33

Total : 30 67

Page 14: Statistic assignment  (muti rara zara citra)

The Result In Pie Chart

Page 15: Statistic assignment  (muti rara zara citra)

T h a kny o u