21) A cross-section graph A) is divided into different sections. B) shows the values of an economic variable for different groups in a population at a point in time. C) measures time on the x-axis and the variable in which we are interested on the y-axis. D) Both answers A and C are correct. E) Both answers A and B are correct. 22) A graph that shows the value of an economic variable for different groups in a population at a given time is called a A) scatter diagram. B) times-series graph. C) pie chart. D) cross-section graph. E) fixed-time diagram. 23) A graph shows the average wage of various demographic groups in 2012. The kind of graph used to show these data would be a A) scatter diagram. B) time-series graph. C) cross-section graph. D) Venn diagram. E) fixed-year figure. 24) A graph showing the values of an economic variable for different groups in a population at a point in time is called a A) cross-section graph. B) time-series graph. C) scatter diagram. D) Venn diagram. E) None of the above answers is correct. 25) ________ shows the values of a variable for different groups in the population at a certain point in time. A) A time-series graph B) The origin C) A cross-section graph D) A scatter plot E) A trend-line graph 26) A cross-section graph A) is divided into different sections. B) shows values of an economic variable for different groups in a population at a point in time. C) measures time on the x-axis and the variable in which we are interested on the y-axis. D) Both answers A and C are correct. E) Both answers B and C are correct. 27) You have data for the amount of rainfall in 50 cities for the month of June. The type of graph to best display these data would be a A) time-series graph. B) multi-variable time series graph. C) cross-section graph. D) scatter diagram. E) trend-line diagram. 28) You have data for sales of pizza for each of the 50 states in 2011. The type of graph to best display these data would be a A) cross-section graph. B) time-series graph. C) scatter diagram. D) multi-variable time-series graph. E) trend-line diagram. 29) A graph shows the average SAT scores for males and females in 2012. The kind of graph used to show these data would be a A) scatter diagram. B) time-series graph. C) cross-section graph. D) time-stationary graph. E) trend figure. 30) Demonstrating how an economic variable changes from one year to the next is best illustrated by a A) scatter diagram. B) time-series graph. C) linear graph. D) cross-section graph. E) Venn diagram.