In a newspaper article about whether the regular use of Vita

In a newspaper article about whether the regular use of Vitamin C reduces the risk of getting a cold, a researcher is quoted as saying that Vitamin C performed better than placebo in an experiment, but the difference was not larger than what could be explained by chance. In statistical terms, the researcher is saying the results are _______

A) due to non-sampling errors.

B) definitely due to chance.

C) statistically significant.

D) not statistically significant.

Solution

c). statistically significant

The difference in sample statistics is considered to be satistically significant (that is, probability true) if its not by chance.