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Ch. 1 - Introduction to Statistics
Larson - Elementary Statistics: Picturing the World 8th Edition
Larson8th EditionElementary Statistics: Picturing the WorldISBN: 9780137493470Not the one you use?Change textbook
Chapter 1, Problem 1.3.30

Determine whether you would take a census or use a sampling. If you would use a sampling, determine which sampling technique you would use. Explain.
The average distance traveled to a stadium by 55,000 spectators

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Step 1: Understand the problem. The goal is to determine whether to use a census or sampling to find the average distance traveled to a stadium by 55,000 spectators. A census involves collecting data from every individual in the population, while sampling involves collecting data from a subset of the population.
Step 2: Evaluate the feasibility of a census. Since the population size is 55,000 spectators, conducting a census would require significant time, resources, and effort to collect data from every individual. This is often impractical for large populations.
Step 3: Decide to use sampling. Sampling is a more efficient method for large populations, as it allows us to estimate the average distance traveled without surveying every individual. Sampling is appropriate in this case.
Step 4: Choose a sampling technique. Common sampling techniques include simple random sampling, stratified sampling, systematic sampling, and cluster sampling. For this problem, consider factors such as the diversity of the population (e.g., spectators from different regions) and logistical constraints.
Step 5: Explain the chosen sampling technique. For example, if spectators are grouped by regions, stratified sampling could be used to ensure representation from each region. Alternatively, simple random sampling could be used if the population is relatively homogeneous. Clearly justify the choice based on the context of the problem.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Census vs. Sampling

A census involves collecting data from every member of a population, providing complete and accurate information. However, it can be time-consuming and costly, especially for large populations. In contrast, sampling involves selecting a subset of the population to estimate characteristics of the whole. This method is often more practical and efficient, particularly when the population is large, as in the case of 55,000 stadium spectators.
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Sampling Distribution of Sample Proportion

Sampling Techniques

Sampling techniques are methods used to select individuals from a population to participate in a study. Common techniques include random sampling, where every member has an equal chance of selection, and stratified sampling, which involves dividing the population into subgroups and sampling from each. The choice of technique affects the representativeness and reliability of the results, making it crucial to select an appropriate method based on the research goals.
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Sampling Distribution of Sample Proportion

Representativeness

Representativeness refers to how well a sample reflects the characteristics of the larger population. A representative sample ensures that the findings can be generalized to the entire population, reducing bias. Factors such as sample size, selection method, and diversity of participants play a significant role in achieving representativeness, which is essential for drawing valid conclusions about the average distance traveled by spectators to the stadium.
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Step 3: Get P-Value Example 3