This chapter kicks the course off by reviewing conditional probabilities, Bayes' theorem, and central limit theorem. Along the way, you will learn how to handle questions that work with commonly referenced probability distributions.

Conditional probabilities

Setting up problems

Bayes' theorem applied

Central limit theorem

Samples from a rolled die

Simulating central limit theorem

Probability distributions

Bernoulli distribution

Binomial distribution

Normal distribution

Probability and Sampling Distributions

In this chapter, you will prepare for statistical concepts related to exploratory data analysis. The topics include descriptive statistics, dealing with categorical variables, and relationships between variables.  The exercises will prepare you for an analytical assessment or stats-based coding question.

Statistika deskriptif

Mean atau median

Menghitung simpangan baku secara manual

Data kategorikal

Teknik pengodean

Menjelajahi harga laptop

Dua atau lebih variabel

Jenis-jenis hubungan

Korelasi Pearson

Sensitivitas terhadap pencilan

Exploratory Data Analysis

Prepare to dive deeper into crucial concepts regarding experiments and testing by reviewing confidence intervals, hypothesis testing, multiple tests, and the role that power and sample size play. We'll also discuss types of errors, and what they mean in practice.

Confidence intervals

Confidence interval by hand

Applying confidence intervals

Hypothesis testing

One tailed z-test

Two tailed t-test

Power and sample size

Effect on type II error

Calculating sample size

Visualizing the relationship

Multiple testing

Calculating error rates

Bonferroni correction

Statistical Experiments and Significance Testing

Wrapping up, we'll address concepts related closely to regression and classification models. The chapter begins by reviewing fundamental machine learning algorithms and quickly ramps up to model evaluation, dealing with special cases, and the bias-variance tradeoff. 

Regression models

Linear regression

Logistic regression

Evaluating models

Regression evaluation

Classification evaluation

Missing data and outliers

Handling null values

Identifying outliers

Bias-variance tradeoff

Test and training error

Visualizing the tradeoff

Wrapping up

Regression and Classification

Apakah Anda ingin mendapatkan pekerjaan berikutnya atau mengasah keterampilan wawancara statistik agar tetap tajam? Bersiaplah untuk menguasai konsep wawancara klasik mulai dari probabilitas bersyarat, A/B testing, hingga bias-variance tradeoff, dan banyak lagi! Anda akan bekerja dengan beragam himpunan data termasuk hasil eksperimen berbasis web dan data cuaca Australia. Setelah mengikuti kursus ini, Anda akan dapat menghadapi wawancara berikutnya dengan percaya diri dan menaklukkan pertanyaan statistik apa pun dengan bantuan Python!

Hypothesis Testing in Python

Supervised Learning with scikit-learn

Siapkan wawancara statistik dengan meninjau probabilitas bersyarat, uji A/B, dan bias-varian.

Berlatih Pertanyaan Wawancara Statistik dengan Python

Mean atau median

Berlatih Pertanyaan Wawancara Statistik dengan Python

Latihan interaktif langsung praktik