Common data analysis tools

2022-11-22

Step1：Excel learning mastery The tool used is the most commonly used Excel in the workplace! ①Key functions to learn The focus is to understand the various functions: Vlookup, sum, count, sumif, countif, find, if, left/right, time and date funct...

Data Analyst Level_Data Analysis Exam Level

2022-11-22

The level of data analyst is divided into Level I, Level II, Level III three levels, each level of application requirements are different, the next will take you to understand the data analyst level division details. 1、CDA Level I certificate is ...

Introduction to common data analysis methods

2022-11-22

I. Formula decomposition The so-called formula decomposition method is for a certain indicator, using the formula layer by layer decomposition of the impact factors of the indicator. For example: analyze the reasons for the low sales of a product, us...

Handy guide to juggle a Web exchange rate calculator

2022-11-22

Source：Python Technology I've just come across front-end web development some time ago, but for those who are just starting out, frameworks like flask, Django and other such slightly larger frameworks are not really suitable, so today Dash is a lig...

Inventory of a Python dictionary processing of basic topics

2022-11-22

Source: Python Crawler and Data Mining I. Preface A few days ago, in Python's strongest king exchange group [鄒鄒鄒ི།།།與歌同行ཉྀ] asked a Python dictionary processing problem, and the screenshot of the question is as follows. Here is the da...

From beginner to advanced | 10 Kaggle datasets for data people to practice

2022-11-22

Kaggle is a very popular data science competition platform. On it, you can not only compete in various data analysis questions, but also practice your skills with real datasets from various industries. In this article we will introduce 10 datasets, ...

20 SQL query statements that data analysts must know and know how to use

2022-11-22

Source: About Data Analysis and Visualization As a data analyst, you need to spend a lot of time every day to analyze and dig out the hidden information in the data to find new values, and nowadays most companies store their data in Mysql database. ...

Inventory | 6 Predictive Models Every Data Analyst Should Know

2022-11-22

Data analysis models have different characteristics and techniques, and it is worth noting that most advanced models are based on a few basic principles. Which models should you learn when you want to start a career as a data scientist? In this arti...

How to get millions of likes? It's so easy to make shake video with Python

2022-11-22

Source: About data analysis and visualization In the last tutorial, we talked about the application of Python in image processing by calling the opencv module, so today I'll share with you that Python can also be used to create videos, that is, by c...

Since I figured out the callback function, my understanding of Python has gone to the next level

2022-11-22

Source: Uncle Mac Programming This issue should be an old fan's request - three minutes to speak clearly what is the callback function (Callback Function). " Definition A callback function is when a pointer (address) to a function is passed as an ...

Python tips for functions that return results

2022-11-22

Python's function returns results Hello everyone, today we're going to talk about functions that return results. But the function we're using is a little bit more complicated. We define def fibo (n), fibo is a name I gave myself, n represents how ma...

I did this while working to prepare for the CDA certification | CDA holder shares

2022-11-22

Hello, my name is Shouming Jiang and I am a CDA Level I certification holder. I am currently working in a fintech company doing consulting and solution related work. My undergraduate degree is in Information and Computing Science, which is almos...

This is how I prepared for the exam in my senior year at Zhongnan University of Economics and Law | CDA holder shares

2022-11-22

Hello, my name is Yonan Tang and I am a CDA Level I holder. I'm glad to share my preparation experience with you here. I am a senior student majoring in Data Science and Big Data Technology, studying in the School of Statistics and Mathematics at Zh...

As a liberal arts student, how exactly can I learn data analysis well?

2022-11-22

I don't know when we have entered the era of "everyone must know a little data analysis". With the gradual application of big data technology, mastering data analysis has become a necessary skill for the contemporary workplace! So as a liberal arts...

Graduates of 2022 seek jobs: they would rather cut their salary than join in

2022-11-22

In 2022, China's college graduates exceeded the 10 million mark for the first time, setting a new historical record, and the employment situation of graduates has received social attention. The report shows that only half of the graduates choose to ...

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