Get familiar with missing data and how it impacts your analysis! Learn about different null value operations in your dataset, how to find missing data and summarizing missingness in your data. 

Mengapa menangani data hilang?

Langkah-langkah menangani nilai hilang

Operasi nilai null

Menemukan nilai Null

Menangani nilai yang hilang

Mendeteksi nilai hilang

Mengganti nilai yang hilang

Mengganti nilai hilang yang tersembunyi

Analisis jumlah kemissingan

Menganalisis persentase missingness

Visualisasikan missingness

The Problem With Missing Data

Analyzing the type of missingness in your dataset is a very important step towards treating missing values. In this chapter, you'll learn in detail how to establish patterns in your missing and non-missing data, and how to appropriately treat the missingness using simple techniques such as listwise deletion. 

Is the data missing at random?

Guess the missingness type

Deduce MNAR

Finding patterns in missing data

Finding correlations in your data

Identify the missingness type

Visualizing missingness across a variable

Fill dummy values

Generate scatter plot with missingness

When and how to delete missing data

Delete MCAR

Will you delete?

Does Missingness Have A Pattern?

Embark on the world of data imputation! In this chapter, you will apply basic imputation techniques to fill in missing data and visualize your imputations to be able to evaluate your imputations' performance. 

Mean, median & mode imputations

Mean & median imputation

Mode and constant imputation

Visualize imputations

Imputing time-series data

Filling missing time-series data

Impute with interpolate method

Visualizing time-series imputations

Visualize forward fill imputation

Visualize backward fill imputation

Plot interpolations

Imputation Techniques

Finally, go beyond simple imputation techniques and make the most of your dataset by using advanced imputation techniques that rely on machine learning models, to be able to accurately impute and evaluate your missing data. You will be using methods such as KNN and MICE in order to get the most out of your missing data! 

Imputing using fancyimpute

KNN imputation

MICE imputation

Imputing categorical values

Ordinal encoding of a categorical column

Ordinal encoding of a DataFrame

KNN imputation of categorical values

Evaluation of different imputation techniques

Analyze the summary of linear model

Comparing and choosing the best adjusted R-squared

Comparing density plots

Conclusion

Advanced Imputation Techniques

Diabetes

Air Quality

Lelah bekerja dengan data yang berantakan? Tahukah Anda bahwa sebagian besar waktu seorang data scientist dihabiskan untuk mencari, membersihkan, dan menata ulang data? Ternyata, Anda bisa membersihkan data secara cerdas! Dalam kursus Menangani Data Hilang di Python ini, Anda akan mempelajari cara tersebut. Anda akan belajar menangani nilai hilang untuk data numerik, kategorikal, serta data deret waktu. Anda juga akan mempelajari cara melihat pola yang ditunjukkan oleh data hilang. Sambil bekerja dengan data kualitas udara dan diabetes, Anda akan belajar menganalisis, melakukan imputasi, dan mengevaluasi dampak imputasi pada data.

Introduction to Data Visualization with Matplotlib

Supervised Learning with scikit-learn

Pelajari cara menangani nilai hilang untuk data numerik, kategorikal, dan deret waktu, serta analisisnya.

Menangani Data Hilang di Python

Pelajari cara mengidentifikasi, menganalisis, menghapus, dan mengisi data yang hilang dalam Python. 

Menemukan nilai Null

Menangani Data Hilang di Python

Latihan interaktif praktis