What is Statistical Significance?

Statistical significance tells you if the results of a survey or study are significant or whether the results are due to chance. For example, suppose you wanted to determine the affects of smoking during pregnancy on a baby’s health. You survey two groups of women, those who smoked during pregnancy and those who did not. You find that those who smoked during pregnancy were more likely to have a baby with health issues. But how do you know if these results mean that smoking contibutes to health issues or whether the results were due to chance and if you repeated the study with another group of women you would have different results? Look here for more information: