Question

1. peter works at a grocery store to earn money to buy a used vehicle. the bar graph below shows his monthly earnings last year. what is the range of the bar graph? the options are: {1,2,3,4,5,6,7,8,9,10,11,12}; {700,800,900,925,950,1000,1050,1100,1150,1200,1300,1400}; the set of real numbers; {0,200,400,600,800,1000,1200,1400,1600}

Explanation:

Step1: Recall Range Definition

Range of a data set (from a graph) is the set of all possible output values (earnings here). So we need the set of Peter's monthly earnings.

Step2: Analyze the Bar Graph

The bar graph's y - axis is earnings (in dollars). The earnings values from the graph (looking at the bar heights) are 700, 950 (Feb? Wait, no, let's list the earnings: Jan:700, Feb:950? Wait, no, let's check the options. The second option has {700, 800, 900, 925, 950, 1000, 1050, 1100, 1150, 1200, 1300, 1400} – wait, actually, the range in a bar graph for earnings (the dependent variable) is the set of all earnings values. The first set is months (1 - 12, domain), third is real numbers (too broad), fourth is y - axis ticks (not actual earnings). The second set is the set of earnings values from the graph.

Answer:

{700, 800, 900, 925, 950, 1000, 1050, 1100, 1150, 1200, 1300, 1400} (the second option)