Drill #81. Find the equation of the line passing through the following point with the given slope: (-4, -3) , m = ¾ 1. Point- Slope Form 2. Slope Intercept Form 3. Standard Form. 12-1 Sampling and Bias.
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Find the equation of the line passing through the following point with the given slope:
(-4, -3), m = ¾
1. Point- Slope Form
2. Slope Intercept Form
3. Standard Form
Objective: To identify various sampling techniques, and to recognize a biased sample.
Open books to page 642.
Sample: Some portion of a larger group
Population: The group from which a sample is chosen.
Random Sample: A sample that is chosen without any preference, usually representative of an entire population.
Stratified Random Sample: A sample is chosen after the population is divided into similar non-overlapping groups.
Systematic Random Sample: Items are selected according to a specified time or item interval. (assembly line)
Example 1a, b: page 642
Check Your Progress 1A, 1B
12-1 Study Guide, #1-4
Definition: a sample in which one or more parts of the population are favored over others.
Example 2a, b: page 643
Check Your Progress 2
Convenience Sample: A sample in which members of a population are chosen who are easily accessed.
Voluntary Response Sample: Involves only those who want to participate in the sampling.
Example 3a, b: page 644
Check Your Progress 3A, 3B
Example 4a, b, c: page 644
Check Your Progress 4A, 4B, 4C