Free GMAT Practice Question

The graph below shows the relationship between the number of new books purchased by a public library and its annual student membership registrations over the past 10 years.

The graph indicates a --- Select ---Strongly positiveStrongly negativeNo correlation correlation between the number of new books purchased and student memberships at the library.

During one of the years depicted in the graph, the sum dollar value of total student memberships reached $620,000, with the library's average expenditure per membership being $20. In that year, the number of new books purchased was --- Select ---24,00031,00035,000.