# Elementary Statistics Unit 2: Data Collection & Sampling

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## 18 Questions

### What is the main characteristic of Snowball Sampling?

Research participants recruit other members for the study.

### When is Snowball Sampling particularly useful?

When participants might be hard to find.

### Which sampling technique involves selecting participants based on a specific characteristic or trait?

Stratified Sampling

### What differentiates Systematic Sampling from Simple Random Sampling?

Systematic Sampling involves selecting participants at regular intervals.

### In which sampling technique do researchers select participants purely based on their availability and accessibility?

Convenience Sampling

### What is a key advantage of Simple Random Sampling?

It ensures representation of various population segments.

### What is the main drawback of convenience sampling?

It lacks objectivity

### What is the key characteristic of quota sampling?

Determination of proportions for subgroups in the population

### What is the basis for selecting respondents in purposive sampling?

Satisfaction of specific criteria

### Why might a researcher choose convenience sampling?

For ease and convenience

Quota Sampling

### What distinguishes purposive sampling from other sampling methods?

Selection based on specific criteria set by researchers

### What is the primary focus of Statistics as discussed in the text?

Collection, presentation, analysis, and interpretation of data

### Why is it important to determine a sample size in a population?

To ensure the study is representative of the population

### What is the significance of learning different sampling techniques?

To gather data more effectively and choose samples scientifically

### Which of the following is NOT a reason for learning both probability and non-probability sampling techniques?

To choose samples randomly

### What is the key learning outcome related to data collection methods in this unit?

Identifying types of data collection methods for researches

### Why is it necessary to apply the appropriate sampling technique during data collection?

To guarantee the representativeness of the sample collected

Learn about data collection methods and sampling techniques in elementary statistics. Explore different methods for collecting data and determining sample sizes in a population.

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