M4 Final Period Review Fall 24

Front

What is the result of (3 + 2i) - (4 - 5i)?

Back

-1 + 7i

Front

What type of sampling method is used when a company surveys all households in a randomly chosen block?

Back

Cluster Random Sample

Front

What are the dimensions of a matrix with 3 rows and 2 columns?

Back

3 x 2

Front

What is the sum of the following matrices: 11 8 -4 2 and 3 2 -6 -6?

Back

11 8 -4 2

Front

In a matrix, what does a₂₃ represent?

Back

The element in the 2nd row and 3rd column of the matrix.

Front

Define a complex number.

Back

A number that can be expressed in the form a + bi, where a and b are real numbers and i is the imaginary unit.

Front

What is the imaginary unit 'i'?

Back

The imaginary unit 'i' is defined as the square root of -1.

Front

What is a Simple Random Sample?

Back

A sampling method where every individual has an equal chance of being selected.

Front

What is a Stratified Random Sample?

Back

A sampling method that involves dividing the population into subgroups and randomly sampling from each subgroup.

Front

What is a Systematic Random Sample?

Back

A sampling method where you select every nth individual from a list.