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Statistical significance

We randomly chose 50 people out of 100 volunteers to take a reading comprehension test. Half of the students were assigned to wear glasses and the other half contacts to see how they would perform on the test. The results did not have a significant enough different to give a statistical analysis.

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Outcome

We found that people with glasses did an average of 2% worse that the ones who worse contacts. It was believed that the glasses were more of a distraction to the students.

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Crossover

We will split the students in half randomly and then later will have them switch to whichever eyewear they havent taken the test with yet.

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Treatments

Treatments in this case would be glasses or contacts.

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Explanatory variable

Testing with contacts.

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Replication

We did the same test thefollowing  year with 50 other volunteers with glasses to see if we could get better results.

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Sample size/ MOE

Our sample size is 50 people and our margin of error is 14%

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Control group

The control group would be the people who still wear their glasses rather than changing them to contacts.

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Background

Glasses and contacts can give different looks on life, so we wanted to see if this effects a different look on testing. Reading comprehension was a perfect test to take because you really have to look for key words or phrases and what if the different views changes that.

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Blind

We cannot make this experiment blind because people will know who is wearing glasses or contacts.

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Selection method

We will have 100 students with glasses volunteer and assign each person a number 1-100 and SRS 50 people randomly to take a reading test.

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Experimental units

100 randomly selected people at BCHS who wear glasses.

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Question/ Goal of experiment

If people who normally wear glasses are given contacts, will their reading comprehension improve?

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Expenses

The expenses for giving each student a pair of contacts for their prescription was around $2,000. To rent the location where it was held was $300 and the tests were $150 for all of them together. We also gave $100 to the top scoring student. In total the cost was around $2,550.

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Results

Based on the data taking the test with glasses gave an average score of 78% and taking a test with contacts gave an average score of 81%.