A company is developing a new type of airplane that can take off like a helicopter. Before they begin manufacturing the airplanes on a large scale, they first build a prototype. What is the main purpose of building a prototype?

It Helps them Test it.

Step-by-step explanation: Prototyping helps you achieve that. In fact, the ultimate intent of creating a prototype is user testing which tells you how usable and valuable your product is to the end user. You can gain inputs and insights about how real users would actually use the product and what you can improve to address their pain points.

to make sure the design works as expected

Step-by-step explanation:

An engineer starts the product design process by making drawings and notes about his or her idea. Next, models are built of the design. Once the model is satisfactory, a prototype is built. The prototype is a key opportunity for the engineer to identify and solve any design problems before the product is commercially produced.

histogram or dot plot?

step-by-step explanation:

no, because the sides are not congruent