Biostatistics - Study Material with Solved Assignments and Essays

Running head: BIOSTATISTICS
Biostatistics
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BIOSTATISTICS1
Table of Contents
Answer to the q.no. 4 (a)............................................................................................................2
Answer to the q.no. 4 (b)............................................................................................................2
Answer to the q.no. 4 (c)............................................................................................................2
Answer to the q.no. 6 (a)............................................................................................................3
Answer to the q.no. 6 (b)............................................................................................................3
Answer to the q.no. 6 (c)............................................................................................................3
Answer to the q.no. 7 (d)............................................................................................................3
Answer to the q.no. 7 (e)............................................................................................................3
Answer to the q.no.8 (a).............................................................................................................4
Answer to the q.no.8 (b).............................................................................................................4
Answer to the q.no.8 (c).............................................................................................................5
Answer to the q.no.8 (d).............................................................................................................5
Answer to the q.no.8 (e).............................................................................................................5
References..................................................................................................................................6

BIOSTATISTICS2
Answer to the q.no. 4 (a)
Explanatory variable is also called independent variable. But when a variable is
independent then it is not affected by any other variable and when it is not independent then it
is an explanatory variable.
A Response variable is a variable which is also called dependent variable. In other
words response variable has been depends on another factor, which is called independent
variable.
In this study the variables are quantitative variable but the data has been divided in to
three categories like none, one, both genetic variation.
Answer to the q.no. 4 (b)
Figure 1 Box plot on Genetic variation
The figure 1 has been shown the boxplot on Genetic variation. In This figure X-axis
has been provided the different genetic variation and in the Y- axis illustrate the survival
time. For none genetic variation the maximum genetic variation is more than 55 and the
median is approximately 20. In the both genetic variation minimum is less than 10 and
median is approximately 10. Similarly for one genetic variation the median is greater than 15.
From the sixty months chemotherapy study has been conjectured that none of the
genetic variation has been shown the highest deflection and both has been reflected the
lowest deflection over survival time.
Answer to the q.no. 4 (c)
Yes, one or both genetic variations reduces survival time. From the figure 1 it has
been cleared that as compared to one or both, both genetic variation has been reduced highest
survival time. Because in case of both the minimum survival time is less than 10, median is
approximately 10 and the maximum is less than 20.