Question

repetition and replication
a student is writing his procedure for his science fair project. his
teacher reminded him that his experiment should include repetition
and should be replicable. here is the procedure he came up with
to determine which brand of diaper is the most absorbent:

1. purchase 5 different brands of diapers and measure their

weight.

1. have baby sister wear each diaper for 1 hour.
2. measure the weight of the diaper after 1 hour to see how much

liquid it absorbed.

1. do the experiment again every day for a week.

is the students experiment replicable? why or why not?
a yes, the students experiment is replicable
since he performed the experiment a total of 7
times.
b yes, the students experiment is replicable
because any other student could easily follow
his procedure.
c no, the students procedure is not replicable
because it is too complicated for someone else
to repeat it. he should have limited it to one
brand of diaper and only done the experiment
for one or two days.
d no, the students procedure is not replicable
because it depends on too many outside
factors that cant be controlled, such as how
much his sister had to drink or if she even went
to the bathroom during the one hour.

Explanation:

Replicability in an experiment means that another person can follow the same procedure and obtain similar results. In this case, the student's procedure involves having his baby sister wear the diapers. However, factors such as how much the sister drinks or if she goes to the bathroom are outside factors that can't be controlled. These variables make it difficult for another person to replicate the exact conditions of the experiment.

Answer:

D. No, the student's procedure is not replicable because it depends on too many outside factors that can't be controlled, such as how much his sister had to drink or if she even went to the bathroom during the one hour.