Chapter 3 Computing with numbers

Question 1

What is data?

Answer 1

information that is stored and manipulated by computer programs

Question 2

What are the main two data types covered in this chapter?

Answer 2

integer data (int) and floating point data (float)

Question 3

what is the main difference between integers and floats?

Answer 3

floats are numbers that have fractional parts represented while integers are whole numbers.

Question 4

What special function can you run if you are confused on type of data a value is?

Answer 4

> > > type
ex:
type (3)

Question 5

True or False
Using an int value tells the reader of the program that the value can support fractions.

Answer 5

False

Question 6

What is another difference between floats and ints?

Answer 6

floats can only represent approximations to real numbers. Because of this, it is usually a good rule of thumb to use

Question 7

True or False
Since floating point numbers are extremely accurate, they should generally be used instead of ints.

Answer 7

False

Question 8

True or False
In Python, 4+5 does not produce the same result type as 4+5.0 .

Answer 8

True

Question 9

In order to use functions in the math library, a program must include:

Answer 9

An import statment

Question 10

The most appropriate data type for storing the value of Pi is:

Answer 10

a float

Question 11

Accumulator structure?