# Ch 20: ISTEP+ Grade 7 Math: Probability

### About This Chapter

## ISTEP+ Grade 7 Math: Probability - Chapter Summary

Make sure your students are ready to answer questions about probability on the ISTEP+ Grade 7 Math exam by having them check out this chapter. Our lessons will provide a thorough review of:

- How probability is determined for simple, compound and complementary events
- Simple conditional probabilities
- The probability of independent events
- Independent, dependent, overlapping and non-overlapping events
- Steps for calculating probability, the probability of chance and relative frequency

These engaging lessons were designed by experts in the field of mathematics. Our instructors remain available to answer questions about the processes related to probability.

### 1. Probability of Simple, Compound and Complementary Events

Simple, compound, and complementary events are different types of probabilities. Each of these probabilities are calculated in a slightly different fashion. In this lesson, we will look at some real world examples of these different forms of probability.

### 2. How to Calculate Simple Conditional Probabilities

Conditional probability, just like it sounds, is a probability that happens on the condition of a previous event occurring. To calculate conditional probabilities, we must first consider the effects of the previous event on the current event.

### 3. Probability of Independent and Dependent Events

Sometimes probabilities need to be calculated when more than one event occurs. These types of compound events are called independent and dependent events. Through this lesson, we will look at some real-world examples of how to calculate these probabilities.

### 4. Either/Or Probability: Overlapping and Non-Overlapping Events

Statistics is the study and interpretation of a set of data. One area of statistics is the study of probability. This lesson will describe how to determine the either/or probability of overlapping and non-overlapping events.

### 5. Probability of Independent Events: The 'At Least One' Rule

Occasionally when calculating independent events, it is only important that the event happens once. This is referred to as the 'At Least One' Rule. To calculate this type of problem, we will use the process of complementary events to find the probability of our event occurring at least once.

### 6. Calculating the Probability of Chance

Suppose you'd like to meet a five-foot-tall basketball player in your math class. What are your chances? Here's how to estimate a probability, using a sampling technique and appropriate calculations.

### 7. Calculating Probability & Relative Frequencies

Learn to model simple situations by calculating probabilities for events with equally likely outcomes. Use these probabilities to make predictions, and evaluate your model by comparing real-life observations to the predictions.

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### Other Chapters

Other chapters within the ISTEP+ Grade 7 - Math: Test Prep & Practice course

- ISTEP+ Grade 7 Math: Prime Factorization
- ISTEP+ Grade 7 Math: Square Roots
- ISTEP+ Grade 7 Math: Rational & Irrational Numbers
- ISTEP+ Grade 7 Math: Operations with Rational Numbers
- ISTEP+ Grade 7 Math: Math Properties
- ISTEP+ Grade 7 Math: Algebraic Expressions
- ISTEP+ Grade 7 Math: Graphing Basics
- ISTEP+ Grade 7 Math: Linear Equations
- ISTEP+ Grade 7 Math: Inequalities
- ISTEP+ Grade 7 Math: Slope & Rate of Change
- ISTEP+ Grade 7 Math: Ratios & Proportions
- ISTEP+ Grade 7 Math: Lines & Angles
- ISTEP+ Grade 7 Math: Geometric Constructions
- ISTEP+ Grade 7 Math: Triangles
- ISTEP+ Grade 7 Math: Similar Figures
- ISTEP+ Grade 7 Math: Area & Circumference
- ISTEP+ Grade 7 Math: Complex Figures
- ISTEP+ Grade 7 Math: Populations & Statistics
- ISTEP+ Grade 7 Math: Data Analysis & Statistics
- ISTEP+ Grade 7 Math: Mathematical Process
- ISTEP+ Grade 7 - Math Flashcards