Question

choose the best tool for each scenario. identifying a trend in temperature change over time: graph measuring the mass of a product of a chemical reaction: graduated cylinder calculating a best - fit line for a data set: nongraphing calculator stopwatch computer

Explanation:

A computer is the best tool for calculating a best - fit line for a data set. Computers have software (such as spreadsheet software like Excel, statistical software like R or SPSS) that can perform complex calculations to determine the best - fit line (regression line) for a given data set. A nongraphing calculator is mainly used for basic arithmetic and simple statistical calculations (like mean, median), but lacks the functionality for complex regression analysis. A stopwatch is used for measuring time intervals.

Answer:

computer