Statistics and Probability

N = 2355, e = 0.05, n =?

Types of Bar Graphs

N = 210, e = 5%, n =?

Methods of Data Collection

Two Types of Data

Precision of Estimates, Statistical Power, and Generalizability are key concepts of Factors Affecting Sample Size.

Is Lotto an example of Simple Random Sampling?

Refers to information collected through observation, experimentation, or research.

Math Scores from 22 Students : 22, 20, 25, 22, 23, 19, 25, 30, 28, 23, 22, 21, 29, 27, 30, 24, 23, 22, 21, 26, 30, 30

Variables are ____________?

__________ represents categories or groups, but these categories have a natural order or ranking.

Every member of the population has a known, non-zero chance of being selected.

A population is a group to be studied, and population data is a collection of all elements in the population.

If you have a list of 1000 names and you want a sample of 100, you might choose every 10th name. This is an example of?

This technique is useful when targeting a specific group of experts or individuals with characteristics.

________ can be quantitative (numeric) or qualitative (categorical).

The Average, The Middle Value, and The Most Frequent Value.

A branch of Mathematics that deald with analyzing, interpreting, collecting, and presenting the data.

Hard-to-Locate

Qualitative variables are also known as categorical variables.

Adequate sample size ensures that results can be generalized to the broader population. [Generalizability]

1500/1 + (1500)(0.05)² =?

200/1 + (200)(0.05)² =?

165/1 + (165)(5%)² =?

________ represents categories or groups with no inherent order or ranking.

Larger sample sizes provide more precise estimates of population parameters. [Precision of Estimates]

Variables are the characteristics we are interested in.

Population Size are total number of individuals in the group you are studying.

A sample is a subset of data drawn from the population of interest.

Height, weight , speed are examples of Qualitative Variable.

Key concepts of Understanding Slovin's Formula are Population Size (N), Margin of Error (e), and the formula itself.

Simple Random Sampling - Every member of the population has an equal chance of being selected. Is the statement right?

Quota: 150 students

Based of the specific characteristics.

NOT every member of the population has a known or equal chance of being selected.