SaiBook.us Statistics

Lesson Example Discussion Quiz: Class Homework

Example

Title: Baye’s theorem

Grade: 9-a Lesson: S3-L7

Explanation: The best way to understand statistics is by looking at some examples. Take turns and read each example for easy understanding.

Examples:

From the standard deck of cards,a single cards is drawn.The probability that the card is king is 4/52,then calculate P(king/face),which means the drawn face card is a king card.

Step 1a

Assumption of probability

Explanation:

P(king) = probability that the card is king = \$4/52 = 1/13\$

P(face) = probability that the card is face = \$3/13\$

P(Face/king) = Probability of face card when we assume it is a king = 1

Step 1b

Finding the probability

Explanation:

P(king/face) = \$(1(1/13))/(3/13)\$

P(king/face) = \$1/13 × 13/3\$

P(king/face) = \$1/13\$

Probability that face card is a king card = \$1/13\$