Question

You and your lab partner record the following counts of stomata in sunflower leaves.

Answer 1

Answer:

a) $7.07$

b) $2.89$

Explanation:

First of all we are required to calculate the mean of the Stomata (per examination area) which is equal to

$\frac{(88 + 93 + 90 + 92 + 75 + 78)}{6}\\= 86$

Now for standard deviation,  the formula is

$\sqrt{\frac{(X - X')^2}{n-1} }$

Where X is the value of number and X' is the value of mean. n is the number of entry.

a)

Substituting the given values in above equation, we get

$\sqrt{\frac{(88-86)^2 + (93 - 86)^2 + (90-86)^2 + (92 -86)^2 + ( 75 -86)^2 + (78 -86)^2}{(6-1)} } \\= \sqrt{\frac{4 + 49 + 16 + 36 + 81 + 64 }{5} } \\= 7.07$

b) Standard error in the number of stomata for the sunflower leaves.

Standard error = $\frac{7.07}{\sqrt{6} } \\= 2.89$