Statistics Sampling Strategy
Not what you're looking for?
1. Create a real-life research question or topic of your choosing. This question may be something that you work with in your career, see on a daily basis, come from a hobby, etc. The answers to the question (your data) should be quantitative (numerical).
Solution:
The United States is experiencing high death rate due to cancer. The important factor for cancer is cigarettes. Nowadays, Cigarettes are smoked by even children. This interests us to know which of the states in U.S. are buying more cigarettes and to know on an average what would be the sales of cigarettes in total United States.
The data set is shown in Excel Sheet for your reference.
2. Choose a legitimate sampling strategy and collect at least 30 data points using your created question or topic. Discuss the sampling strategy in sufficient detail so that someone else could repeat your data collection without any difficulties or questions.
Solution:
To know about the cigarette sales, the data has been collected in every state of United States. In every state 30 shops has been selected and the sales of cigarettes per capita is collected. And average per capital sales for these 30 shops was found.
Sampling Strategy:
The sampling strategy here followed is Simple Random Sampling. In every state 30 shops are selected and per capita sales of cigarettes are collected. The data set is given in Excel Sheet.
The aim of the study is clear that most of the states in U.S. lie in which of the interval. A histogram will reveal the fact about the above. A histogram is given below for the data in Excel Sheet.
3. Prepare a histogram of your data.
Purchase this Solution
Solution Summary
This Solution contains calculations to aid you in understanding the Solution to these questions.
Education
- BSc , Wuhan Univ. China
- MA, Shandong Univ.
Recent Feedback
- "Your solution, looks excellent. I recognize things from previous chapters. I have seen the standard deviation formula you used to get 5.154. I do understand the Central Limit Theorem needs the sample size (n) to be greater than 30, we have 100. I do understand the sample mean(s) of the population will follow a normal distribution, and that CLT states the sample mean of population is the population (mean), we have 143.74. But when and WHY do we use the standard deviation formula where you got 5.154. WHEN & Why use standard deviation of the sample mean. I don't understand, why don't we simply use the "100" I understand that standard deviation is the square root of variance. I do understand that the variance is the square of the differences of each sample data value minus the mean. But somehow, why not use 100, why use standard deviation of sample mean? Please help explain."
- "excellent work"
- "Thank you so much for all of your help!!! I will be posting another assignment. Please let me know (once posted), if the credits I'm offering is enough or you ! Thanks again!"
- "Thank you"
- "Thank you very much for your valuable time and assistance!"
Purchase this Solution
Free BrainMass Quizzes
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.