Problem statement: A study was conducted to examine subjects with chronic, nonsp
ID: 3054848 • Letter: P
Question
Problem statement: A study was conducted to examine subjects with chronic, nonspecific low back pain. A random sample of 30 subjects were selected and administered the sham treatment. Subjects completed a questionnaire assessing physical functioning at baseline, and after one, three and six months. Will the scores be significantly different?
The appropriate test for this problem is:
t test for one sample
t test for dependent samples
t test for independent samples
one-way ANOVA
repeated measurements ANOVA
correlation analysis
linear regression
multiple regression
one-variable chi-square
two-variables chi-square
Problem statement: Kuya was asked by an emergency service to do a study to see whether a relationship exists between outside temperature and the number of emergency calls received. Kuya collected hourly data for temperature and number of calls over a period of three days. Is there a significant relationship?
The appropriate test for this problem is:
t test for one sample
t test for dependent samples
t test for independent samples
one-way ANOVA
repeated measurements ANOVA
correlation analysis
linear regression
multiple regression
one-variable chi-square
two-variables chi-square
Explanation / Answer
Ans:
1)we will use repeated measure ANOVA.
As,same 30 subjects were measured at different times,so subjects are dependent,so we will use repeated measure ANOVA.
Repeated measures ANOVA is the equivalent of the one-way ANOVA, but for related, not independent groups, and is the extension of the dependent t-test. A repeated measures ANOVA is also referred to as a within-subjects ANOVA or ANOVA for correlated samples.
2)We will use linear regression.
In this problem,temperature is the independent variable(or explanatory or perdictor variable) and number of call recieved is dependent variable (or response variable)
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