This pictogram shows the number of tail feathers counted on each bird. Find the total number of tail feathers, and then use it to find the mean number of tail feathers per bird.
A chart of birds where one circle represents 4 tail feathers. The top bird has 2 and one fourth circles. The middle bird has 2 and three fourth circles. The bottom bird has 4 circles. Total number is blank.
To find the total number of tail feathers, we need to count the number of circles for each bird and add them up.
The top bird has 2 and one fourth circles, which is equal to 2 + 1/4 = 2.25 circles.
The middle bird has 2 and three fourth circles, which is equal to 2 + 3/4 = 2.75 circles.
The bottom bird has 4 circles.
Now, let's add up the number of circles for each bird:
2.25 + 2.75 + 4 = 9
Therefore, the total number of tail feathers is 9 circles.
To find the mean number of tail feathers per bird, we need to divide the total number of tail feathers (9) by the number of birds (3).
Mean number of tail feathers = Total number of tail feathers / Number of birds
Mean number of tail feathers = 9 / 3 = 3
Therefore, the mean number of tail feathers per bird is 3.