Question

The use of cellular phones has been associated with the development of brain cancer, as evidenced in several studies. However, other studies have shown no such association. To further investigate the relationship between cell phone use and brain cancer, researchers recruited a total of 171 individuals with brain cancer and 492 without. Of the individuals who had brain cancer, 75 reported that they used their cell phones for more than 200 minutes every day. Of the individuals who did not have brain cancer, 292 used their cell phones for less than 200 minutes every day. Complete a 2x2 table, use it to answer the following question.

Calculate the proper measure of association.

Answer 1

The proper measure of association between cell phone use and brain cancer is -0.0107, indicating a weak negative association.

Step-by-step explanation:

To calculate the proper measure of association between cell phone use and brain cancer, we can use a 2x2 table with the following information:

Cell Phone Use: Yes No
Brain Cancer:

Yes 75 96

No 96 396

We can calculate the measure of association by using the formula:
Measure of Association = (a*d - b*c) / sqrt((a + b)(c + d)(a + c)(b + d))

Plugging in the numbers, we get:
Measure of Association = (75 * 396 - 96 * 96) / √((75 + 96)(96 + 396)(75 + 96)(96 + 396))
Measure of Association = -0.0107

The proper measure of association between cell phone use and brain cancer is -0.0107, which indicates a weak negative association. However, it's important to note that this measure alone is not enough to establish a conclusive relationship between the two variables.