Video Transcript
It has long been thought that cats
are the most popular Internet pet. To test this theory, data were
collected by a well-known search engine on the number of searches for cat-related
videos and dog-related videos each month over a five-year period. The results are represented in the
box plots below. Use the information illustrated in
the box plots to determine whether or not cats are indeed the premier Internet
pet.
So in order to decide whether or
not cats are more popular than dogs in Internet searches, we want to know on average
which pet has the highest number of searches. So the measure of average, or we
can also call it the central tendency, that we have available from the box plots is
the median. And this is shown by the line
inside each of our boxes. And we can see that, in this case,
so our example here, the median lines are horizontal since the variable values are
on the vertical axis.
And what we can see by reading
across from the median line to the vertical axis is the value of the medians. We can see that the median for cats
is approximately 15.5. And we need to remember that this
is millions of searches. Whereas for dogs, we can see that
it’s approximately 19 million searches. Since, on average, the number of
searches for dogs per month was higher, we can conclude that the data disproves the
theory. Because, in fact, in online
searches for videos of them, dogs are on average the most popular pet, not cats.
