In a weighted-value adjustment of four survey routes, Route 1 is assigned a weight value of 1. What is the summation of the weights for all four routes?

• A. 5.066
• B. 5.086
• C. 5.076
• D. 5.096

Answer: (C)

The main idea is that the total weight in a weighted adjustment is found by adding the individual weights of all observations or routes. If one route has a weight of 1 and the overall total weight for all four routes is 5.076, then the remaining three routes together contribute 4.076. So, 1 plus 4.076 equals 5.076. Weights can be decimal values because they reflect relative precision or reliability, not just whole numbers, so a total like 5.076 is perfectly plausible. The other options would require different sums from the other three routes, which would not match the given total.