数据分析本身是一门非常综合的学科,通常在面试准备的过程中也是非常的零散和琐碎,很多求职者不停的就各个方面进行复习准备,但总觉得学不到头,或者不管怎么准备总会不够充分,面试被挂。那么,今天就给大家带来一个最精简版的框架,帮助大家检测自己的学习/面试程度。
【概率统计】
1. 描述性统计
均值(期望)
中位数
众数
方差(标准差):3 sigma
极大/小值
数据分布(正态/伯努利/二项/均匀/指数/泊松;偏度与峰度)
缺失值
异常值
2. 假设检验
原假设/备择假设
T检验
卡方检验(非参数检验)
P值
置信度
置信区间
A/B Test
3. 概率论
条件概率(贝叶斯原理)
抽样
大数定律
中心极限定理
区间估计/参数估计
R方
方差分析
推荐学习工具:
数理统计:
【分析工具】
1. SQL
表的增删改查
表连接
子查询
窗口函数
SQL语句执行顺序
推荐学习工具:
W3 School: https://www.w3schools.com/sql/default.asp
SQL Zoo:https://sqlzoo.net
推荐刷题工具:
LeetCode - 从Easy到Medium,有时间再Hard,但Hard不必强求(Summary of SQL on LeetCode: https://byrony.github.io/summary-of-sql-questions-on-leetcode.html )
HackerRank - 全部刷完: https://www.hackerrank.com/domains/sql
2. Python
基本数据结构:列表/字典/字符串/元组/数组/集合
基本语句:If条件语句/for循环/while循环
基本package:numpy/pandas/sklearn/statsmodel/matplotlib/seaborn
推荐学习工具:
W3 School: https://www.w3schools.com/python/default.asp
RealPython: https://realpython.com
推荐刷题工具:LeetCode - 从Easy到Medium
3. Tableau
图表类型
交互式面板
基础的计算函数
4. EXCEL
基本计算函数
数据透视表
V LOOKUP
【算法模型】
原理、模型解读、模型评估、使用场景、优缺点、模型优化
回归
线性回归
逻辑回归
Lasso/Ridge回归
分类
决策树
随机森林
SVM
聚类
时间序列模型
推荐刷题工具:LeetCode/Glassdoor真题题库 - 从Easy到Medium
【Product Sense】
1.分析方法
漏斗分析
拆解分析
对比分析
留存分析
用户分群分析
归因分析
渠道路径分析
2. 指标体系 - AARRR体系
Acquisition(与拉新相关指标)
曝光/展现IMPERESSION
点击CLICK
下载量
新注册用户数
获客成本(CPM千人展现成本/CPC单次点击成本/CPA单次行动成本)
Activation(与活跃相关指标)
活跃用户数(DAU日活用户数/WAU周活用户数/MAU月活用户数)
时长指标(用户在线时长/用户登录时长/APP使用时长/视频播放时长)
启动次数(冷启动次数/热启动次数)
页面浏览量(PV页面浏览量/UV独立访客数)
Retention(与留存相关指标)
留存(短期留存:次日、3日、5日、7日 - 反映功能短期留人效果/长期留存:30日、60日 - 反映留存长期稳定性)
用户生命周期(LT = 当日留存率+次留率+3留率+…n留率)
Revenue(与变现相关指标)
交易类 - 核心在于成交(GMV/成交量/销售收入/ARPU每个用户平均收入/复购率)
社区类 - 核心在于打造生成内容的活跃社区(内容生成用户数/内容互动用户数/内容实际收入 - 内容价值)
企业类 - 核心在于用户体验(体验用户数/付费用户数/用户生命周期价值LTV)
Refer (与传播相关指标)
病毒K因子(邀请率 = 发出邀请数/现有用户数/接受率 = 新注册用户数/发出邀请数/K因子 = 邀请率*接受率)
传播周期
推荐学习工具:
Framework - 必看!: https://stellarpeers.com/frameworks/
Product Sense: https://productschool.com
A Collection of Data Science Take Home Challenge: https://datamasked.com
互联网企业模拟面试实例: Decode and Conquer: Answers to Product Management Interviews
Cracking the PM Interview - 重点看:Estimation, Product, Case
【Behavior】
模板:
S(Situation) - T(Task) - A(Action) - R(Result)
主题:
(1) Leadership and how to influence others
(2) A hard challenge faced and How to solve it
(3) A true failure and how to turn it around
(4) A proud success made with team together
话不多说,快点开始行动,备战招聘季吧!
Our design team is always available to assist customers in bringing their vision to life. If you have a specific idea but are unsure how to execute it, we provide expert guidance to ensure that the end result is exactly what you envisioned. Businesses, sports teams, schools,flagleunlimited.org and event organizers can take advantage of our customization service to create eye-catching banners and flags that effectively convey their message.
Parktown Residence Tampines is a highly anticipated residential development in Singapore’s vibrant Tampines district. Offering modern living with well-designed apartments, it provides residents with a perfect blend of comfort and convenience. Strategically located, it offers easy access to shopping malls, schools, parks, and public transport. The development features premium amenities such as swimming pools, gyms, and landscaped gardens, catering to a contemporary lifestyle. Ideal for families and professionals alike, parktown residence tampines ensures a balanced urban lifestyle with seamless connectivity and excellent facilities, making it a sought-after address for those looking for quality living in a prime location.
Caddens security doors offer top-notch protection for homes caddens security doors , combining durability with modern design. Crafted from high-quality materials, these doors are designed to withstand harsh weather conditions while providing enhanced security against potential intruders. The sleek, contemporary styles complement any home exterior, adding both safety and aesthetic appeal. With features like reinforced frames, tamper-resistant locks, and mesh screens, Caddens security doors ensure peace of mind for homeowners without compromising on visual appeal. Easy to maintain and customizable to suit different preferences, they are an excellent investment for those seeking reliable home security and style in one package.
The Blade Truck Mounted Attenuator (TMA) is a crucial safety device designed to protect road workers and motorists during highway maintenance and construction activities. Mounted on the rear of a truck, this impact-absorbing system effectively cushions collisions, minimizing damage and reducing injury risks. Its innovative blade design efficiently redirects crash energy away from the vehicle, blade truck mounted attenuator ensuring maximum safety. The Blade TMA is highly durable and easily deployable, making it ideal for high-speed road environments.
Lighting towers are essential equipment used to illuminate large outdoor areas, providing high-intensity lighting for construction sites, events, and emergency situations. Typically mounted on extendable poles, these towers are powered by diesel or electric generators, ensuring reliable lighting even in remote locations. With their ability to cover extensive areas, lighting towers enhance safety and productivity during nighttime operations. They are commonly used in industries such as construction, mining, and events, offering mobility and easy setup. Their durable design and energy-efficient lighting solutions make them a valuable asset for any nighttime project requiring reliable illumination.