Between which years did the number show the largest increase?

Between which years did the number show the largest increase?

• A. 1989 to 1994
• B. 1984 to 1986
• C. 1970 to 1976
• D. 1996 to 1998

Answer: (A)

You're looking for where the data increases the most over a given stretch of years. To find that, compare how much the value rises from the start to the end of each interval, not how long the interval lasts. The stretch from 1989 to 1994 shows the biggest jump in the data, meaning the increase in that period is larger than the increases in the other intervals. The other intervals either rise less or do not surpass that amount of growth, so they’re not the largest increase.

You're looking for where the data increases the most over a given stretch of years. To find that, compare how much the value rises from the start to the end of each interval, not how long the interval lasts. The stretch from 1989 to 1994 shows the biggest jump in the data, meaning the increase in that period is larger than the increases in the other intervals. The other intervals either rise less or do not surpass that amount of growth, so they’re not the largest increase.