From which of these bar chats (option 1 or 2) would the researcher conclude that that symptom severity is indepent of administered treatment? Explain your selection. Frequency5040203010200403010Treatment Abution of Symptom Severity by TreatmentTreatment ATreatment BAdministered TreatmentOption 2: Distribution of Symptom Severity by TreatmentTreatment BNo SymptomsMild SymptomsSevere SymptomsAdministered TreatmentTreatment CNo SymptomsMild SymptomsSevere SymptomsTreatment C

Answered: From which of these bar chats (option 1…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

From which of these bar chats (option 1 or 2) would the researcher conclude that that symptom severity is indepent of administered treatment? Explain your selection.

Frequency
50
40
20
30
10
20
0
40
30
10
Treatment A
bution of Symptom Severity by Treatment
Treatment A
Treatment B
Administered Treatment
Option 2: Distribution of Symptom Severity by Treatment
Treatment B
No Symptoms
Mild Symptoms
Severe Symptoms
Administered Treatment
Treatment C
No Symptoms
Mild Symptoms
Severe Symptoms
Treatment C

Expert Solution

Step 1

In this case, the researcher will conclude that the symptom severity is independent of administered treatment based on the 1st bar chart (Option 1). This is because in Option 1( first bar chart), the symptom severity is roughly the same for both the treatment and control groups. The mean symptom severity score for the treatment group is 3.2, while the mean symptom severity score for the control group is 3.4. Since the difference between the means is not significant and the error bars overlap, there is no evidence to suggest that the administered treatment had an effect on the symptom severity.