Statistics homework
Lee24
lab_7_powerpoint-2.pptxLab 6: Memory and Independent T-Test
Memory Experiment
Count off by 2s
Not truly random, but we’re going to say it is in order to save time
Group 2: Put your heads down
Group 1
For each word that is read aloud, count or estimate the number of vowels in each word.
Do not write anything down.
This is a mental exercise.
Group 1 – Heads down
Group 2 – Heads up
Group 2
For each word that is read aloud, rate each word on a scale of 1-5 in terms of its value to a person stranded on a desert island.
1 = not valuable 5 = very valuable
Do not write anything down. This is a mental exercise.
Heads up!
Listen to the list of words that I will read aloud…
On your blank piece of paper please write your:
Name
Student ID
Major(s)
Now write down as many words as you can remember
You will have one minute to write as many words as you can recall.
Count how many words you remembered:
UMBRELLA
GASOLINE
ORCHESTRA
YACHT
HAMMER
DIAMOND
UNIVERSITY
MACARONI
EYEGLASSES
GARDEN
UNDERWEAR
NEWSPAPER
ALCOHOL
BOUQUET
MICROSCOPE
CAMOUFLAGE
POLLUTION
RESTAURANT
INSECT
ELEPHANT
SULPHUR
LEMONADE
MOSQUITO
BOTTLE
Data Analysis
Independent t-test
Independent t-test
Used when we have two samples and every participant is only in one sample
A between-groups design
Paired sample t-tests are used when we have two samples and every participant is in both samples
A within-groups design
You will learn more about these tests in lecture!
Enter Data into SPSS
2 Variables:
Group (1 or 2)
Number of words remembered
Running an independent t-test in SPSS
Analyze → compare means → independent sample t-test →
choose your ‘data’ (your dependent variable) and move it to the “test variable(s)” box on the right
Move your independent variable into the “grouping variable” box below this
Click on ‘define groups’
Click on specified values, enter both 1 and 2 separately
Click continue, click OK
Independent t-test Output
See Lab 5 Handout
