During a research study, the heights (in inches) of a sample of plants were recorded over a ten-week period. The data collected is as follows: Week 1: 12 inches Week 2: 16 inches Week 3: 20 inches Week 4: 22 inches Week 5: 21 inches Week 6: 25 inches Week 7: 31 inches Week 8: 30 inches Week 9: 29 inches Week 10: 35 inches Based on this data, compare the average height of the plants over the first five weeks to the average height over the last five weeks. Which of the following statements is true?

Exam

ISEE Upper Level

Section

Difficulty

Quantitative Reasoning

Plant Height Comparison

Hard Quantitative Comparisons Data Interpretation

During a research study, the heights (in inches) of a sample of plants were recorded over a ten-week period. The data collected is as follows:

Week 1: 12 inches
Week 2: 16 inches
Week 3: 20 inches
Week 4: 22 inches
Week 5: 21 inches
Week 6: 25 inches
Week 7: 31 inches
Week 8: 30 inches
Week 9: 29 inches
Week 10: 35 inches

Based on this data, compare the average height of the plants over the first five weeks to the average height over the last five weeks. Which of the following statements is true?

The average height over the first five weeks is greater than the average height over the last five weeks.

The average height over the first five weeks is equal to the average height over the last five weeks.

The average height over the first five weeks is less than the average height over the last five weeks.

The average heights over both periods cannot be compared.

Hint

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