"The higher divorce rate of couples who previously cohabited compared to those who did not can be explained by different attitudes toward marriage and divorce held by individuals in these two groups." This explanation illustrates:.

Selection effect  

Explanation:

The selection effect or the selection biased is the procedure of distortion in the statistical analysis. collecting in the data from the sample population. It is a threat from out of the four for validity. It shows the result of the test variables. It is a type of conversion rate. It is like collecting the data from the unrepresentative population.  

Thus here the higher diverse report of the divorce of the couples. This is the explanation of the selection bias.  

gold discovery in california, and pioneer settlers were sometimes pulled west because they wanted to make a better living. others received letters from friends or family members who had moved west. these letters often told about a good life on the frontier. the biggest factor that pulled pioneers west was the opportunity to buy land.

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explanation:

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