Question

drag each item on the left to its matching item on the right. note that every item may not have a match, while some items may have more than one match.
correlation causation
the incidence of disease from pertussis, small pox, tetanus, and polio has decreased dramatically in the last 100 years, and the rate of vaccination against pertussis, small pox, tetanus, and polio has correspondingly increased.
rates of dental cavities have increased in the last 100 years and so has the average sugar intake, which stimulates bacteria that erode tooth enamel.
cell phone usage has increased dramatically in the last 100 years and so have autoimmune disorders such as multiple sclerosis.
the rate of vaccination has increased in the last 100 years and so has the incidence of disorders such as autism.

Explanation:

1. Vaccination - disease decrease is causation as vaccines prevent diseases.
2. Sugar - cavities is causation as sugar feeds cavity - causing bacteria.
3. Cell phone - autoimmune is correlation, no proven cause - effect.
4. Vaccination - autism is correlation, no scientific causation.

Answer:

1. causation
2. causation
3. correlation
4. correlation