When researchers monitored the professional accomplishments of more than 1500 highly intelligent individuals, they found that the most successful were more ambitious, energetic, and persistent. This best illustrates the importance of:

Under a tyranny the power to make a political decision is in the hands of a

Which of the following best summarizes the idea represented by this graph?

Donald is studying the eating habits of all students attending his school. he samples the population by dividing the students into groups by grade level and randomly selecting a proportionate number of students from each group. he then collects data from the sample. which type of sampling is used? select the correct answer below: systematic sampling convenience sampling stratified sampling cluster sampling