Unit 7 & 8 Study Guide

Front

What is the equation of a cosine function that can represent a graph?

Back

y = 4 * cos(4x)

Front

How do you calculate the mean of a set of numbers?

Back

Add the numbers together, then divide by how many numbers are in the set.

Front

What is the mean of the following numbers: 4, 9, 7, 10, 5?

Back

7

Front

What is the mean of the following numbers: 81, 69, 72, 80, 67, 62, 78, 74, 71, 86?

Back

74

Front

What is the sine function represented as in terms of theta?

Back

f(θ) = sin(θ)

Front

What is the general form of a sine function?

Back

y = A * sin(Bx + C) + D, where A is the amplitude, B affects the period, C is the phase shift, and D is the vertical shift.

Front

What is the amplitude of the function y = 4 * sin(2x)?

Back

4

Front

What is the period of the function y = 4 * sin(2x)?

Back

Front

What is the range of the function y = 4 * sin(x)?

Back

The range is [-4, 4].

Front

What is the difference between mean and median?

Back

Mean is the average of a set of numbers, while median is the middle value when the numbers are arranged in order.