Based on the Data Given in the Table, If the Revegetation

question 34

Multiple Choice

Based on the data given in the Table, if the revegetation site were limed and fertilized with nitrogen, would you also recommend the addition of P fertilizer to improve tree growth?

• A) no
• B) yes
• C) no basis to judge
• Average height of 10 trees planted on reclaimed, mined-over land.
• Growth factor added Nothing added 100 kg/ha N 50 kg/ha P 2 cm / wk water
• No lime 56 45 63 50
• Lime added 85 170 84 80
• True or False Questions
• (Write T or F after each question.)

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Definitions:

Population Average

The mean value of a trait or characteristic within an entire population.

Sample Mean

The average of all the data points in a sample, used as an estimate of the population mean.

Square Root

The square root of a number is a value that, when multiplied by itself, gives the original number.

P < 0.05

A statistical threshold indicating that the observed results are significant with a probability of less than 5% being due to chance.