Pengambilan sampel berbobot

Menganalisis Data Survei di Python

EbunOluwa Andrew

Data Scientist

Apa itu pengambilan sampel berbobot?

Probabilitas tidak sama
Memungkinkan peneliti memperbaiki masalah saat pengumpulan data

Timbangan keadilan di meja, neraca

Variabel umum dalam pengambilan sampel berbobot

Karakteristik demografis seperti gender, usia, lokasi, pendidikan
Mengakomodasi perbedaan antara yang ikut serta dan tidak dalam studi

Keluarga, siluet orang dari berbagai usia

Pembobotan berbasis sel

¹ https://www.geopoll.com/blog/weighting-survey-data-raking-cell-weighting/

Pembobotan berbasis sel

¹ https://www.geopoll.com/blog/weighting-survey-data-raking-cell-weighting/

Pembobotan berbasis sel

¹ https://www.geopoll.com/blog/weighting-survey-data-raking-cell-weighting/

Pembobotan berbasis sel

¹ https://www.geopoll.com/blog/weighting-survey-data-raking-cell-weighting/

Menganalisis pola belanja remaja dengan Python

yp_survey

| Gender | Age | Entertainment |
|--------|-----|---------------|
| female |  19 | Agree         |
| female |  20 | Agree         |
| male   |  19 | Agree         |
| female |  19 | Disagree      |
| female |  24 | Disagree      |
| male   |  18 | Agree         |
| male   |  18 | Agree         |
| male   |  20 | Disagree      |

Menganalisis pola belanja remaja dengan Python

import pandas as pd
yp_crosstab = pd.crosstab(
  yp_survey['Gender'],
  yp_survey['Entertainment'])
yp_crosstab

yp_crosstab.plot.barh()

|        | Agree | Disagree |
|--------|-------|----------|
| female |    81 |       84 |
| male   |    84 |       46 |

Menganalisis pola belanja remaja dengan Python

survey = yp_survey.groupby(['Gender', 'Entertainment'])['Age'].count().reset_index()

survey.columns = ['Gender', 'Entertainment', 'Respondents']
survey

| Gender | Entertainment | Respondents |
|--------|---------------|-------------|
| female | Agree         |          81 |
| female | Disagree      |          84 |
| male   | Agree         |          84 |
| male   | Disagree      |          46 |

Menganalisis pola belanja remaja dengan Python

survey['% total respondents'] = survey.Respondents * 100./survey.Respondents.sum()

survey['% of population'] = [35, 25, 20, 20]

survey['Weight'] = survey['% of population']/survey['% total respondents']

survey['Weighted Respondents'] = survey.Weight * survey.Respondents

Menganalisis pola belanja remaja dengan Python

survey[['Gender','Entertainment',
        'Respondents','Weighted Respondents']].set_index(
  ['Gender','Entertainment']).plot.barh()

Ayo berlatih!

Menganalisis Data Survei di Python