To Investigate the Relationship Between Yield of Soybeans and the Amount

question 25

Multiple Choice

To investigate the relationship between yield of soybeans and the amount of fertilizer used, a researcherdivides a field into eight plots of equal size and applies a different amount of fertilizer to each plot. The tableshows the yield of soybeans and the amount of fertilizer used for each plot. $\begin{array}{l|cccccccc}\text { Amount of fertilizer (pounds) , } & 1 & 1.5 & 2 & 2.5 & 3 & 3.5 & 4 & 4.5 \\\hline \text { Yield of soybeans (pounds) , } \mathrm{y} & 25 & 21 & 27 & 28 & 36 & 35 & 32 & 34\end{array}$

• A) \(r = 0.819\); linear relation exists
• B) \(r = 0.729\); no linear relation exists
• C) \(\mathrm { r } = 0.683\); linear relation exists
• D) \(r = 0.683\); no linear relation exists 5 Explain the difference between correlation and causation.

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Definitions:

Minute Ventilation

The volume of air breathed in or out of the lungs in one minute, important for respiratory function assessment.

Tidal Volume

The amount of air that moves in or out of the lungs with each normal breath.

Thoracic Wall

The structural boundary of the thoracic cavity, including the rib cage, sternum, and spinal column, providing protection and support for the chest organs.

Thoracic Volume

The volume of the thoracic cavity, which includes the lungs and heart, affecting breathing and other thoracic functions.