Suppose a researcher was
interested in studying the differences between males and females in SMS text messaging usage. To test whether there was a difference in text
messaging between genders; the researcher took a random sample of 100
students at State University Tech (50 males and 50 females).
He provided
these students with a survey that asked questions such as 1) do you
have a cell phone; 2) do you have a plan that includes text
messaging, 3) are you limited in the number of text messages you can
sent per month, etc. After getting this information, the researcher
excluded participants that did not have cell phones, did not have
plans that allowed for text messaging, and those people with plans
that limited the number of text messages.
He did this to control as
many variables as he could as to not confound (mess up) his
experiment. After weeding out participants, his final sample
consisted of 25 females and 25 males (N
= 50).
To begin the experiment
the researcher asked each participant to count the number of text
messages they send for 4 weeks (1 month). This was the researcher’s
dependent variable. He received the information from each participant
and placed the data into SPSS. The data are on blackboard under
“Assignments” under the file name test
message data for SPSS assignment.
Use SPSS to calculate the appropriate statistical test for the given
data set. Write up your results as you would in a scientific,
peer-reviewed journal. The write up should be in APA format and
include, at least,
the obtained value, the significance level, and the interpretation of
the significance level.
T-TEST
Assume an
experimenter is interested in determining the effects of an early
intervention program on the overall verbal skills of a group of
underprivileged children. The experimenter randomly assigns children
into one of two groups: aggressive, early intervention, and passive,
early intervention. After being on the program for six months, the
children are administered an achievement test. Now you must determine
if there is a difference between the results of the two intervention
programs based on achievement test scores. Further, you must decide
which intervention led to higher scores (if there was a difference
between the interventions). The data are on blackboard under
“Assignments” under the file name achievement
test scores for SPSS assignment.
Use SPSS to calculate the
appropriate statistical test for the given data set. Write up your
results as you would in a scientific, peer-reviewed journal. The
write up should be in APA format and include, at
least, the
obtained value, the significance level, and the interpretation of the
significance level.
CORRELATION
A researcher
wishes to test part of the Addictive Personality theory, that
individuals addicted in one area tend to be addicted in other areas.
Specifically, the researcher wants to find out if there is a
relationship
between alcohol abuse and gambling abuse among persons incarcerated
for substance abuse. A random sample of 10 male inmates from Ruston
Parish correction center is selected from the population of inmates
serving time for substance abuse. Each man is tested on two major
addiction scales, Substance Abuse Subtle Screening Inventory and the
Gambling addiction Index (GAI). Higher scores indicate greater
addiction. The data are on blackboard under “Assignments” under
the file name addiction
data for SPSS assignment.
Use SPSS to calculate the appropriate statistical test for the given
data set. Write up your results as you would in a scientific,
peer-reviewed journal. The write up should be in APA format and
include, at least,
the obtained value, the significance level, and the interpretation of
the significance level.
ANOVA
A researcher
is interested in whether a significant trend exists regarding the
popularity of certain work shifts among police officers in. A random
sample of 16 uniformed officers was selected from a large
metropolitan police force. The officers are asked to use a scale to
score how much they liked working each shift (1-10 scale with higher
numbers meaning they enjoyed working that shift more).
The shift
choices were the morning shift (1st
shift), the afternoon shift (2nd
shift), and the late night shift (3rd
shift). Further, the experimenter wanted to find out if time spent on
the police force influenced scores. Hence, the researcher separated
the officers into two groups: veterans and novices. The researchers
question: is there a difference in shift preference, if so, which
shift is preferred? Is there a difference between the veteran
officers’ preference of shifts and the novice officers’
preference of shifts? The data are on blackboard under “Assignments”
under the file name police
data for SPSS assignment.
Use SPSS to calculate the appropriate statistical test for the given
data set. Write up your results as you would in a scientific,
peer-reviewed journal. The write up should be in APA format and
include, at least,
the obtained value, the significance level, and the interpretation of
the significance level.
Pay attention to the following instructions:
Directions: Read the following summaries and conduct the appropriate statistics using SPSS. Write up your results as you would in a peer-reviewed journal.
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