Question

Getting older How old is the oldest person you know? Prudential Insurance Company asked 400 people to place a blue sticker on a huge wall next to the age of the oldest person they have ever known. An image of the graph is shown here. Describe the shape of the distribution.

Short answer

Left - skewed

Single peak

Gap at 70 year

Step-by-step solution

 Step 1. Given information.

Prudential Insurance Company asked 400 people to place a blue sticker on a huge wall next to the age of the oldest person they have ever known An image of the graph is shown here.

 Step 2.The distribution is skewed to the left 

We can see that the distribution is skewed to the left because the peak in the graph is to the right with a tail fewer dots to the left

We can see that the distribution has a single peak between 90 and 100 years, with a gap at 70 years.

Left - skewed

Single peak

Gap at 70 year