Repetition vs Replication

Repetition vs Replication

Repetition

A scientist doing THEIR OWN experiment again to gather more data, eliminate bias, and determine whether the experiment's results support the hypothesis.

Repeated trials.

The SAME scientist repeats the experiment.

Repetition

Used to verify the accuracy and results of the experiment and to find possible flaws in the experiment.

Replication

An attempt to conduct a scientist's experiment by a DIFFERENT scientist/ group by following the procedures to confirm results.

Replication is done to get the same/ similar results to confirm the validity of the experiment and its conclusions.

ANOTHER scientist.

Replication

Used so scientists can check to see if a controlled experiment was conducted and that good scientific practices were used.

This is called peer review.

Multiple Choice

Which of these represent repetition?

Multiple Choice

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

• Repetition

• Replication

• Both

Multiple Choice

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.

• Repetition

• Replication

• Both

Multiple Choice

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.

• Repetition

• Replication

Multiple Choice

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.

• Repetition

• Replication

Multiple Choice

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.

• Repetition

• Replication

Multiple Choice

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.

• Repetition

• Replication

Multiple Choice

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.

• Repetition

• Replication

Multiple Choice

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.

• Repetition

• Replication

Multiple Choice

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.

• Repetition

• Replication