In Exercises 1 and 2, use the following wait times (minutes) at 10:00 AM for the Tower of Terror ride at Disney World (from Data Set 33 “Disney World Wait Times” in Appendix B).

35 35 20 50 95 75 45 50 30 35 30 30

a. Find the mean xbar.

검증된 단계별 안내

Step 1: Understand the concept of the mean (x̄). The mean is the average of a set of numbers, calculated by summing all the values and dividing by the total number of values.

Step 2: Write down the formula for the mean:

x̄ = \frac{\sum x}{n}

, where

\sum x

represents the sum of all data points and

n

is the number of data points.

Step 3: Add up all the wait times provided in the data set: 35 + 35 + 20 + 50 + 95 + 75 + 45 + 50 + 30 + 35 + 30 + 30.

Step 4: Count the total number of data points in the set. In this case, there are 12 wait times.

Step 5: Divide the sum of the wait times by the total number of data points to calculate the mean:

x̄ = \frac{\sum x}{n}

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Mean

The mean, often referred to as the average, is a measure of central tendency that is calculated by summing all the values in a data set and then dividing by the number of values. It provides a single value that represents the center of the data distribution, making it useful for understanding the overall trend. In the context of wait times, the mean gives an indication of the typical wait time experienced by visitors.

Data Set

A data set is a collection of related values or observations that can be analyzed to extract meaningful information. In this case, the wait times for the Tower of Terror ride represent a specific data set. Understanding the structure and context of the data set is crucial for performing statistical calculations, such as finding the mean.

Central Tendency

Central tendency refers to statistical measures that describe the center or typical value of a data set. The mean, median, and mode are all measures of central tendency, each providing different insights into the data. Recognizing these measures helps in interpreting data effectively, especially when comparing different sets of wait times or understanding variability.

In Exercises 1 and 2, use the following wait times (minutes) at 10:00 AM for the Tower of Terror ride at Disney World (from Data Set 33 “Disney World Wait Times” in Appendix B).35 35 20 50 95 75 45 50 30 35 30 30a. Find the mean xbar.