Final Exam Review NC MATH 4

Front

What is matrix multiplication?

Back

Matrix multiplication is a binary operation that produces a matrix from two matrices. The number of columns in the first matrix must equal the number of rows in the second matrix.

Front

What are the dimensions of a matrix?

Back

The dimensions of a matrix are defined by the number of rows and columns it contains, expressed as 'rows x columns'.

Front

What is the mean of a data set?

Back

The mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.

Front

What is the median of a data set?

Back

The median is the middle value of a data set when the numbers are arranged in ascending order. If there is an even number of observations, the median is the average of the two middle numbers.

Front

What is the mode of a data set?

Back

The mode is the number that appears most frequently in a data set.

Front

What is the range of a data set?

Back

The range is the difference between the highest and lowest values in a data set.

Front

How do you find the component form of a vector?

Back

To find the component form of a vector from point A (x1, y1) to point B (x2, y2), subtract the coordinates: AB = (x2 - x1, y2 - y1).

Front

What is the process of vector subtraction?

Back

Vector subtraction involves subtracting the corresponding components of two vectors.

Front

What is the domain of a function?

Back

The domain of a function is the set of all possible input values (x-values) for which the function is defined.

Front

What does it mean for a function to have 'all real numbers' as its domain?

Back

It means that any real number can be used as an input for the function without restrictions.