Question

this passage describes flowering time in white campion plants.
white campion is a plant that is originally from europe. it was brought to north america about 200 years ago. there are fewer insects and diseases that damage these plants in north america than in europe. because north american white campion plants do not need to spend as much energy resisting insects and diseases, they can grow and reproduce more quickly.
the time that white campion takes to reproduce can be measured by its flowering time. flowering time is the amount of time between when the plant begins to grow and when it starts to make flowers. white campion has a shorter flowering time when it grows in north america.
the table below describes a possible population of white campion plants at the start of a period of time and at the end of that period. the table shows flowering time measurements for a representative sample of the population at the start and for another representative sample at the end.
complete the table.
data from representative samples of a population of white campion plants

point in time	list of flowering time measurements (days)	average flowering time (days)
end	21.3, 26.0, 26.6, 31.4, 37.3, 41.1, 46.6

Explanation:

Step1: Sum start sample values

$35.7 + 41.1 + 49.1 + 49.5 + 55.7 + 58.3 + 69.2 + 73.4 = 432$

Step2: Calculate start average

$\frac{432}{8} = 54$

Step3: Sum end sample values

$21.3 + 26.0 + 26.6 + 31.4 + 37.3 + 41.1 + 46.6 = 230.3$

Step4: Calculate end average

$\frac{230.3}{7} = 32.9$

Answer:

Point in time	List of flowering time measurements (days)	Average flowering time (days)
End	21.3, 26.0, 26.6, 31.4, 37.3, 41.1, 46.6	32.9