An experiment was conducted to study the effect of a new fertilizer on the growth of two varieties of wheat. The data for growth of the plants from germination to next 10 days is shown in the figure.

All other growing conditions such as water and sunlight were kept the same for both the varieties.
Which of the following is the most reasonable conclusion you can draw from the data?
1. The new fertilizer causes faster growth in both varieties than other fertilizers.
2. The new fertilizer causes faster growth in both varieties in the first ten days only.
3. The new fertilizer influences the growth of both varieties.
4. The new fertilizer causes faster growth in variety B than in Variety A.

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Solution

Lets consider the first graph showing the effect of fertiliser on growth of variety A and first graph showing the effect of fertiliser on growth of variety B.

From the above graph we can see that, the new fertiliser causes faster growth in variety B than in variety A.

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Lets consider the first graph showing the effect of fertiliser on growth of variety A and first graph showing the effect of fertiliser on growth of variety B. From the above graph we can see that, the new fertiliser causes faster growth in variety B than in variety A.

Lets consider the first graph showing the effect of fertiliser on growth of variety A and first graph showing the effect of fertiliser on growth of variety B.

From the above graph we can see that, the new fertiliser causes faster growth in variety B than in variety A.