Question

louden county wildlife conservancy counts butterflies each year. data over the last three years regarding four types of butterflies are shown below. what is the average number of variegated fritillaries for all three samples?
louden county butterfly count
2009\t\t\t2010\t\t\t2011
meadow fritillary\t5\tmeadow fritillary\t34\tmeadow fritillary\t14
variegated fritillary\t7\tvariegated fritillary\t95\tvariegated fritillary\t63
zebra swallowtail\t33\tzebra swallowtail\t21\tzebra swallowtail\t10
eastern - tailed blue\t242\teastern - tailed blue\t168\teastern - tailed blue\t170
55
83
106
165

Explanation:

Step1: Identify relevant counts

The counts of Variegated Fritillaries are 7 (2009), 95 (2010), 63 (2011).

Step2: Sum the three values

$7 + 95 + 63 = 165$

Step3: Calculate the average

$\frac{165}{3} = 55$

Answer:

55