Group jj
- 1. Carrots Improve Vision By: Emily Rentschler and Jessica Kilbride
- 2. Experimental Units People who wear glasses or contacts Explanatory Variable Carrots Treatments Eating carrots vs. not eating carrots Response Variable Eyesight
- 3. 1,000 volunteers 500 Males 500 Females 16-25 26-35 36-45 46-55 56-65 16-25 26-35 36-45 46-55 56-65 Carrots No Carrots Carrots No Carrots Carrots No Carrots Carrots Carrots No Carrots No Carrots Carrots No Carrots Carrots Carrots Carrots Carrots No Carrots No Carrots No Carrots No Carrots Eyesight
- 4. Experiment Gather 1,000 volunteers (500 males, 500 females) who have vision problems (people that wear glasses or contacts). Measure each persons original prescription. Split each gender into five groups of 100 based on age; • 100 people between the ages 16-25 • 100 people between the ages 26-35 • 100 people between the ages 36-45 • 100 people between the ages 46-55 • 100 people between the ages 56-65 Put all 100 names from each age category into a different hat. Shake the hat. Choose 50 names from each hat; these people will be given 5 baby carrots of the same brand to eat on a daily basis at 12:00 p.m. for the next 5 years. The remaining 50 names in the hat will be restricted from eating carrots for the next 5 years. After 5 years, the subjects’ eyes will be tested again and their new prescription will be compared to their old one.
- 5. Blocking Blocking is used in this experiment by separating the 1,000 volunteers into 500 males and 500 females and then breaking up the gender groups into smaller groups of 100 based on ages. This was done in order to reduce any bias that would occur because of gender or age. Blinding Blinding was also used in this experiment. The person who evaluates the eyesight after the 5 years will be unaware of which people ate the carrots and which didn’t.
- 6. Concerns Some possible confounding variables that may occur in this experiment include the carrots not being exactly the same every time (having the same amount nutritional value) or if one of the subjects gets an eye injury during the experiment.
- 7. Conclusion We expect the results of this experiment to show that eating carrots over a period of time will significantly improve eyesight.