Davis is interested in the effect of diet on the progression of Type II diabetes. receiving medical treatment for diabetes to one of three different …
Read the following vignette, and answer the questions below which pertain
to it You must do your work WITHOUT the aid of a calculator
Dr Davis is interested in the effect of diet on the progression of Type II
diabetes More specifically, she has randomly assigned patients receiving
medical treatment for diabetes to one of three different diet conditions: a
no-sugar diet with the aid of a nutritionist, a low-carbohydrate diet
also with nutrition consultation, and a no instructions diet She wants
to see if these diets slow or stop the disease from progressing
1 The independent variable in this study is
____________________________________
2 The dependent variable in this study is
______________________________________
3 Progress of the disease is measured by looking at doctors notes that
indicate condition stable, condition slightly worsening or condition
significantly worsening What type of measurement scale is this?
4 Dr Davis is also assessing weight as another variable of interest
What type of measurement scale is this? ___________________
5 The researcher is also tracking whether the patients are overweight
exceeding normal weight interval by more than 10 or not
overweight, as
this has shown up in the literature as relevant to the question What type
of measurement scale is this?
Dr Davis is also examining how many years each of her participants has
been struggling with diabetes In one condition, participant scores on
years since diagnosis are as follows: 5 6 8 6 2 5 3
6 What is the median for this data set? please show your work
_______________________________________
7 What is the mode for this data set?
________________________________________
8 What is the mean M for this data set? please show your work
________________________________________
9 Using the table below, calculate the variance for this data set
|Participan|Score x|x-M |x-M2 |
|t | | | |
|1 |5 | | |
|2 |6 | | |
|3 |7 | | |
|4 |6 | | |
|5 |2 | | |
|6 |5 | | |
|7 |4 | | |
| | | | |
10 Draw a histogram for the data in the table above Be sure to label
all important aspects of your
display
11 Explain why a standard deviation cannot be computed simply as the
average deviation from the mean
Source:salinecounty.org
