A B C D E
B C E A D
C E D B A
D A B E C
E D A C B
Where A = Argentina; B = Brazil; C = Colombia; D = Dominican Republic; and E = El Salvador
Larry Lesser
A B C D E
B C E A D
C E D B A
D A B E C
E D A C B
Where A = Argentina; B = Brazil; C = Colombia; D = Dominican Republic; and E = El Salvador
Larry Lesser
Lyrics © Mary McLellan
may sing to the tune of Meghan Trainor's "All About That Bass"
You know you randomly select, select, no effect
You know you randomly select, select, no effect
You know you randomly select, select, no effect
When your sample’s like the population you can generalize
You know you randomly select, select, no effect
You know you randomly select, select, no effect
You know you randomly select, select, no effect
When your sample’s like the population you can generalize
When you make an experiment you must randomly assign
To make the groups the same so your treatment is the why
When you make an experiment you must randomly assign
To make the groups the same so your treatment is the why
Lyrics © Mary McLellan
may sing to the tune of The Bee Gee's "Stayin' Alive"
Well you can tell by the way I design my experiment
I use my mind
Treatment A and Treatment B of the experiment is what you’ll see
Because subjects-- they go in my big bag I shake them well
Subjects-- they go in my big bag I shake them well
When you need to spread unknown traits evenly - Randomize, RANDOMIZE
When you need to spread unknown traits evenly - Randomize, RANDOMIZE
RANDOMIZE to REDUCE BIAS, REDUCE BIAS
RANDOMIZE to REDUCE BIAS
Lyrics © Mary McLellan
may sing to the tune of "Spongebob Squarepants Theme Song"
Make an experiment what do you do?
Control, randomize, repeat
Make an experiment what do you do?
Control, randomize, repeat
Make an experiment what do you do?
Control, randomize, repeat
Make an experiment what do you do?
Control, randomize, repeat
Randomly assign to the treatment groups
So you can claim the cause and effect
Lyrics © Mary McLellan
may sing to the tune of The Beach Boys "Good Vibrations"
I see you have a trait there
That may affect the way subjects respond
I see you have a trait there
That may affect the way subjects respond
What do you do
Make homogeneous groups
What do you do
Make homogeneous groups
Blocking reduces variation
Blocking reduces variations
Within each block is experimentation
Within each block is experimentation
Shapesplosion is an on-line game in which a person is expected to place specifically shaped pegs into the appropriate holes within a short time period. In this project, students are asked to use the Shapesplosion game to design an experiment and collect data. This game is specifically designed so that students have the opportunity to develop and test their own unique research question. You can leave all the variables blank when you are simply trying out the game, however, if you want to find your score is the database of results, you will need to select the Participant Info box.