Matching Pairs HOW DO WE STUDY POPULATION?Online version Match each word with the correct definition. by Cristina González López 1 The number of births in a population in a specific period is measured by this. 2 Is the number of deaths in a population in a specific period. 3 It is the number of births in a population in a specific period. 4 It is an estimate of the average number of children that a woman has during her lifetime 5 The number of deaths in a population in a specific period is measured by this. Crude birth rate. Birth rate Total fertility rate Death rate. Crude death rate