Repetition vs Replication

Which of these represent repetition?

You go to a neighborhood park 5 times and take notes on the birds you see and hear. You write up your notes.

You go to the same neighborhood park with a friend. You give your friend a copy the notes you took when you went to the park on your own. You and your friend both take notes on the birds you see and hear.

Bobby conducts an experiment to test if a new type of shoes helps track runners run faster. He has five runners run three times with their old shoes and three times with the new shoes.

Billy reads an advertisement about new running shoes that allow runners to run three times as fast. He thinks this claim is too good to be true and contacts Bobby to get his procedures to check his results.

Kasey has a new baby! As a mom on a budget, she wants to know if the most expensive diapers really are the best. She conducts an experiment to test this. She asks her friend Mallory to do her experiment to check her results.

Joe thinks that the 3 LB packages of ground turkey at publix are not actually 3 LBs. He weighs the meat three times on three different kitchen scales.

Kevin is testing DNA from a crime scene. He makes ten copies of the DNA and compares each copy to the database to see if he finds the same match each time.

Cathy is the CEO of a hotel chain. She wants to make sure her hotels are the cleanest in the business so she conducts an experiment to test different parts of the rooms for germs.

She collects samples from 10 remote controls, 10 light switches, and 10 door handles in 10 different rooms of 30 of her hotels.

Debbie heard on the radio that remote controls are the dirtiest thing in a hotel room. She contacts the author of the study to get their procedure so she can check it herself.