# Statistics Impact Project

### By: Sameer Haniyur and Akshay Durvasula

## Is there an association between wearing corrective eye-wear and ethnicity?

## Bias

## Akshay giving out the survey to other people in classes.

## Confounding Variables

## Subject Selection

## Using the random number generator, we would survey 1st and 3rd periods for each teacher

## Our results

## Chi Squared Test For Independence

**Now that we gathered 113 responses, it was time to perform a Chi-square test of independence using the .05 significance level.**

**P**- We are testing to see if there is an association between need for corrective eye-wear (glasses or contacts) and ethnicity at the alpha level a= .05.

**H**- H₀-There is no association between need for corrective eye-wear(glasses or contacts) and ethnicity

Ha-There is an association between need for corrective eye-wear(glasses or contacts) and ethnicity

**A**-Random- Samples were taken using random sampling by selecting 2 periods for teachers we got signatures from using random number generator, and we surveyed all students in those periods for the teachers. 10%: 113<10% of all students at Flower Mound High School. All expected counts are at least five.

**N**- Chi square test for independence with an alpha level of a= .05

**T**- *x^2 **=* (24-25.12)^2/25.12 + (19-17.88)^2/17.88 +...+(21-24.54)^2/24.54

*x^2= ***3.8706**

**O- df=(5-1) * (2-1) = 4 * 1 =4**, **P(x2 > 3.8706) = .424**

**M**-

**Since the P-value p=.424 is greater than the alpha level a= .05, we fail to reject the null hypothesis. There is not convincing evidence of an association between wearing corrective eyewear and ethnicity.**