Sinus infections are common, and doctors commonly treat them with antibiotics. A
ID: 3173261 • Letter: S
Question
Sinus infections are common, and doctors commonly treat them with antibiotics. Another treatment is to spray a steroid solution into the noise. A well-designed clinical that found that these treatments, alone or in combination, do not reduce the seventy or the length of thus infections. The following exercise concerns this trial. If the random assignment of patients to treatments did a good of eliminating bias, possible lurking variables such as smoking history, asthma, and hay fever should be similar in all 4 groups. After recording and comparing many such variables, the investigators said that all showed no significant difference between groups. Explain to someone who knows no statistics what no significant difference means. Does it mean that the presence of all these variables was exactly the same in al four treatment groups? "No Significant difference" means that the differences were so small that the effect on sinus infection was negligible. "No significant difference" means that the groups are identical concerning these lurking variables. "No significant deference" means that the deference's were no bigger than me might expect from true random avocation. "No significant difference" means that the study is free of lurking variables.Explanation / Answer
In case of no significant difference, we can say that:
"No significant difference" means that differences are no bigger than we might expect from true random allocation.
Option C is correct.
The reason of this is that most of the times, some difference exists between the groups due to the random allocation but that difference will not be statistically significant.