Ukuran sampel

Jason mengelola desain web untuk situs perhiasan, BuyBangles.com. Ia ingin menjalankan A/B Test dengan membandingkan tata letak situs lama (A) dan tata letak situs baru (B), lalu melacak persentase pengunjung yang pada akhirnya membeli bangle.

Jason memiliki widget untuk mencari ukuran sampel ideal untuk A/B Test; ukuran sampel yang diperlukan akan berubah saat Anda menyesuaikan persentase konversi dasar dan efek minimum yang dapat dideteksi. Konversi dasar menetapkan persentase saat ini dari pengunjung yang membeli bangle setelah mengunjungi situs, dan efek minimum yang dapat dideteksi menetapkan persentase peningkatan minimum yang ingin dapat kita deteksi.

Bagaimana konversi dasar dan perbedaan minimum yang dapat dideteksi memengaruhi ukuran sampel? Lengkapi kalimat berikut: Seiring konversi dasar meningkat, ukuran sampel ____. Seiring perbedaan minimum yang dapat dideteksi meningkat, ukuran sampel ____.

Latihan ini adalah bagian dari kursus

Data Science untuk Bisnis

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Mulai berolahraga

Latihan ini adalah bagian dari kursus

Data Science untuk Bisnis

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4.8+

Mulai Kursus Gratis

We'll start the course by defining what data science is. We'll cover the data science workflow, and how data science is applied to real-world business problems. We'll finish the chapter by learning about ways to structure your data team to meet your organization's needs.

Exercise 1: What is Data Science?Exercise 2: Customer Segmentation Workflow Exercise 3: Building a customer service chatbot Exercise 4: Improving OKRs Exercise 5: Applications of Data Science Exercise 6: Assigning data science projects Exercise 7: Investment research Exercise 8: Building a data science team Exercise 9: Interpreting a team sprint Exercise 10: Editing a job posting Exercise 11: Matching skills to jobs Exercise 12: Classifying data tasks

Now that we understand the data science workflow, we'll dive deeper into the first step: data collection. We'll learn about the different data sources your company can draw from, and how to store that data once it's collected.

Exercise 1: Data sources and risks Exercise 2: Classifying data for security Exercise 3: Creating web data events Exercise 4: Protecting PII Exercise 5: Solicited data Exercise 6: Identifying question purpose Exercise 7: Validating focus group feedback Exercise 8: Net Promoter Score Exercise 9: Collecting additional data Exercise 10: Sorting data sources Exercise 11: Asthma frequency Exercise 12: Data storage and retrieval Exercise 13: Cloud platforms Exercise 14: Querying a database Exercise 15: Which type of database?

In this chapter, we'll discuss ways to explore and visualize data through dashboards. We'll discuss the elements of a dashboard and how to make a directed request for a dashboard. This chapter will also cover making ad hoc data requests and A/B tests, which are a powerful analytics tool that de-risk decision-making.

Exercise 1: Dasbor Exercise 2: Mengklasifikasikan elemen dashboard Exercise 3: Menyempurnakan dasbor Exercise 4: Memilih dashboard yang tepat Exercise 5: Analisis ad hoc Exercise 6: Mengisi permintaan ad hoc Exercise 7: Mengklasifikasikan permintaan Exercise 8: A/B Testing Exercise 9: Menyusun alur kerja A/B testing Exercise 10: Ukuran sampel

Latihan Saat Ini

Exercise 11: Hasil sementara

In this final chapter, we'll discuss the buzziest topic in data science: machine learning! We'll cover supervised and unsupervised machine learning, and clustering. Then, we'll move on to special topics in machine learning, including time series prediction, natural language processing, deep learning, and explainable AI!

Exercise 1: Supervised machine learning Exercise 2: When to use Supervised Learning Exercise 3: Features and labels Exercise 4: Model evaluation Exercise 5: Clustering Exercise 6: Supervised vs. unsupervised Exercise 7: Cluster size selection Exercise 8: Special topics in Machine Learning Exercise 9: Classifying machine learning tasks Exercise 10: Sentiment Analysis Exercise 11: Deep Learning and Explainable AI Exercise 12: Finding the correct solution Exercise 13: Should I use Deep Learning?