A housing analyst is reviewing and cleaning sales data using this code. What number will this code print?

A beverage company wants to understand how much soda customers consume weekly. They randomly sample 1,000 people from across the U.S. The average consumption is 3.2 liters. Another random sample gives an average of 2.8 liters. What best explains this difference?

A company surveys 25 customers and wants to calculate a confidence interval for the average satisfaction score using bootstrapping. How many values should be in each resampled dataset?

A hotel chain uses historical booking data to create a dashboard showing occupancy rates for each month over the past three years. In this case, what type of analytics is being used?

An operations director needs to report a single metric: average order fulfillment time in hours. What visualization would be most appropriate?

An analyst wants to ensure the number 20 is treated as a string instead of an integer. What code correctly stores this value as a string?

What is an example of a data cleaning task?

An HR manager wants to count how many employees worked a certain number of hours. What will this code print?

A building maintenance company is analyzing the time between emergency repair requests. They want to model how frequently these calls occur throughout the day. Which distribution would describe the count of requests received in an hour?

A brand manager is estimating the probability that a new product launch will exceed sales targets. Which estimate violates a basic rule of probability?