1.Click through rate and probability of clicks.
				
				2.Title: Addressing Home Feed Staleness Complaints in Focus Groups
				
				3.Cross-Platform Daily User Count and Growth Rate Calculation
				
				4.Thoughts on Threefold Increase in Complaint Volume
				
				5.Exploring the Relationship between Cost per Click and Advertiser Churn: A Deep Dive
				
				6.Measuring and Testing Engagement on Billboard Ads
				
				7.Approaches to Excluding Null Values in Dataframes
				
				8.How long should the experiment be conducted?
				
				9.Output List of Fresh Dates Based on Two Lists
				
				10.User Impression Ratio for Fresh Pins within 7 Days
				
				11.Defining fresh content: metrics and methods
				
				12.What is p-value?
				
				13.Defining a Metric for Homefeed Post Variety
				
				14.Analyzing the Pros and Cons of a Stand-Alone Shopping App for Pinterest.
				
				15.Comparing Freshness of Two Lists of Impression Dates
				
				16.Finding the Percent of Users who Saw Fresh Content.
				
				17.Pin Freshness: Evaluating User Views of New vs Old Content.
				
				18.Evaluating a Novel ML Model for Content Recommendations.
				
				19.Calculating Daily User Engagement
				
				20.Replace Zeros with Column Means and Standardize Matrix Using sklearn
				
				21.Customer Analysis Based on City and Country Fields
				
				22.Return Countries with at Least Two Different Users
				
				23.Selecting rows with missing values in age column of a dataframe
				
				24.Metrics, Treatment Groups, and Experiment Duration: Best Practices
				
				25.Function to Compare Freshness between Two Homefeeds with Dates
				
				26.Calculate percentage of users who viewed fresh pins.
				
				27.Defining and Displaying Fresh Pins.
				
				28.Users by Location: Count, Order, and Total
				
				29.Calculating the Standard Deviation of an Array using NumPy
				
				30.Finding Countries with 2+ Business Users and Unknown Cities
				
				31.Considerations for selecting sample size.
				
				32.Difference between t-test and z-test.
				
				33.Evaluating Freshness Impact & AB Testing Guidelines.
				
				34.Function to Determine the Fresher List of Date Impression
				
				35.Calculating Percent of Users Viewing Fresh Content Daily
				
				36.Filtering Out Null Values in DataFrames
				
				37.Find Fresh Content Viewership Percentage from Two Tables.
				
				38.Pinning Freshness: Gauging User Engagement in Pinterest
				
				39.Evaluating the Impact of a New Algorithm on Fresh Content: Key Considerations and Techniques.
				
				40.Calculating Percentage of Users Seeing Fresh Pins
				
				41.Experimental Design and Metric Setting: A Guide.
				
				42.Boosting Engagement on Homefeed with Fresh Pins: Experimentation and Analysis
				
				43.Fresh Pin Daily Impression Rate among Users
				
				44.What is P-value?
				
				45.Power Analysis: Impact of Sample Size and Element Changes
				
				46.Ad Load Analysis by Country and Day for Non-Spam UsersAnswer e
				
				47.Explaining p value in layman's terms.
				
				48.Designing, Measuring, Randomizing, Timing, and Analyzing Experiments
				
				49.Click Probability and Significance Testing Explanation.
				
				50.Ad Load Analysis by Country and Day in 2020
				
				51.Building and Evaluating a Click-through Prediction Model
				
				52.Dealing with Missing Data: Best Practices
				
				53.Launching Image Search: Metrics, Randomization & Experiment Duration
				
				54.Homefeed monotony: Quantifying and solving user complaints.
				
				55.Matrix Coordinate Neighbor Count
				
				56.Trial success rate
				
				57.P-value
				
				58.Prob of getting >=5 clicks
				
				59.Hypothesis testing CTR
				

				60.Promoted and non-spam
				
				61.Probability 
				

				62.Evaluate model performance
				
				63.Variety level
				
				64.Shopping ap
				
				65.AB testing
				
				66.Freshness
				
				67.Complaint volume up
				
				68.Advertiser churn
				
				69.Freshness of Pins
				
				70.谁先到家
				
				71.Impression table
				
				72.Handle missing values
				
				73.Ads load 
				
				74.Impression table
				
				75.相连相等数字
				
				76.Missing value imputation
				
				77.Fresh content
				
				78.Customer table
				
				79.Detecting Soft 404 System Design
				
				80.Top K Elements Coding Problem
				
				81.User Embedding Design
				
				82.Modeling Temporal Features
				
				83.Sampling Based on Scores Without a Defined Range
				
				84.Describe the process and analyze the results of an experiment that involved changing the content viewed by users.
				
				85.Find all posts violated on a specific date
				
				86.Identify policies violated by a given post id
				
				87.Find all posts violating a specific policy
				
				88.Gradient Descent Implementation
				
				89.Calculating Sigmoid Activation Function
				
				90.Regularization Penalties Based on Zeroed Out Coefficients
				
				91.Ensemble Learning Considerations
				
				92.Bootstrap Aggregation Rationale
				
				93.Case Study Metrics and Statistical Tests
				
				94.Python/R Data Structure Familiarity
				
				95.SQL Data Assumptions
				
				96.Member and Pin Embedding Generation
				
				97.Causal Inference and Test Statistics
				
				98.Python Coding Problem
				
				99.SQL Window Functions and CTEs
				
				100.Coding Challenge
				
				101.Machine Learning Knowledge
				
				102.Machine Learning System Design