Questions from Statistics

Q: An article in the Journal of the Academy of Nutrition and Dietetics

An article in the Journal of the Academy of Nutrition and Dietetics reported on a study of diet in subjects with moderate to severe acne. Read the excerpts from the abstract and answer the questions t...

Q: Cartilage is a smooth, rubber-like padding that protects the

Cartilage is a smooth, rubber-like padding that protects the long bones in the body at the joints. A study by Lu et. al. in Arthritis Care & Research found that women who drank one glass of milk daily...

Q: An article by Wakefield et al. in the British medical journal

An article by Wakefield et al. in the British medical journal Lancet claimed that autism was caused by the measles, mumps, and rubella (MMR) vaccine. This vaccine is typically given to children twice,...

Q: An article in the journal BMC Medicine reported on a study designed

An article in the journal BMC Medicine reported on a study designed to study the effect of diet on depression. Subjects suffering from moderate to severe depression were randomly assigned to one of tw...

Q: A study was conducted to see whether participants would ignore a sign

A study was conducted to see whether participants would ignore a sign that said, “Elevator may stick between floors. Use the stairs.” The study was done at a university dorm on the ground floor of a t...

Q: The Harvard Heart Letter reported on a study that examined the diets

The Harvard Heart Letter reported on a study that examined the diets of 1226 older women over 15 years. They discovered that the more vegetables the women consumed, the lower their risk of dying of ca...

Q: The September 2017 issue of Alzheimer’s and Dementia reported on a study

The September 2017 issue of Alzheimer’s and Dementia reported on a study that found an association between drinking sugary drinks and lower brain volume. Is this likely to be a conclusion from observa...

Q: Patients with high blood pressure are asked to keep food diaries recording

Patients with high blood pressure are asked to keep food diaries recording all items they eat for a one-week period. Researchers analyze the food diary data for trends.

Q: Patients with multiple sclerosis are randomly assigned a new drug or a

Patients with multiple sclerosis are randomly assigned a new drug or a placebo and are then given a test of coordination after six months.

Q: A researcher is interested in the effect of music on memory.

A researcher is interested in the effect of music on memory. She randomly divides a group of students into three groups: those who will listen to quiet music, those who will listen to loud music, and...