Purchase Solution

Multinomial Experiments and Chi-Square Distribution

Not what you're looking for?

Ask Custom Question

1. Chapter 10 introduces us to multinomial experiments. What is the difference between a multinomial and a binomial experiment? Please give me an example.
? Multinomial experiment: Experiment with a fixed number of independent trials, where each outcome falls into exactly one of several categories.
? Binomial experiment: Experiment with a fixed number of independent trials, where each outcome falls into exactly one of two categories.
? Example: (I just need an example. Thanks.)

2. The shape of the chi-square distribution looks lop-sided compared to the bell shaped curve. Why are these shaped differently? (This is what I have so far please see below. Is there anything that I am missing?)
? Unlike the normal and Student t distributions, the chi-square distribution is not symmetric.
? The values of the chi-square distribution can be 0 or positive, but they cannot be negative.
? The chi-square distribution is different for each number of degrees of freedom.

Attachments
Purchase this Solution
Solution Summary

Multinomial Experiments and Chi-Square Distribution vs. Bell-Shaped Curve are investigated.

Solution provided by:
Chris Busu, PhD (IP)
Education
  • BSc, University of Bucharest
  • MSc, Ovidius
  • MSc, Stony Brook
  • PhD (IP), Stony Brook
Recent Feedback
  • "Thank you "
  • "Thank You Chris this draft really helped me understand correlation."
  • "Thanks for the prompt return. Going into the last meeting tonight before submission. "
  • "Thank you for your promptness and great work. This will serve as a great guideline to assist with the completion of our project."
  • "Thanks for the product. It is an excellent guideline for the group. "
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.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

View More Free Quizzes
Related BrainMass Solutions

  • Chi square goodness of fit test.

    A chi square goodness of fit test is used to test a hypothesis regarding a multinomial distribution.

  • Chi square test for birth data.

    107323 Multinomial experiments: Chi square test Births. Randomly selected births records were obtained and results are listed in the table below (based on data from the National Vital statistics Report, Vol. 49, No.1).

  • Working with the Chi-Square Procedure.

    You're simulating a multinomial experiment (using a discrete distribution) with the goodness-of-fit test (and a continuous distribution), and if each expected frequency is at least five then you can use the normal distribution to approximate.

  • A Slot machine was tested by playing it a 1197 times.

    Chi square distribution question. Please see attached file. # 8 page 638 A Slot machine was tested by playing it 1197 times.

  • Hypothesis testing procedures and test classifies

    The conditions required for a valid chi-square test are: 1. The 200 observed counts are a random sample from the population of interest. You can then consider this to be a sample from a multinomial distribution with 4 possible outcomes. 2.

  • Chi square test for Multinomial experiments

    107322 Multinomial Experiments Testing a slot machine. The author purchased a slot machine (Bally Model 809), and tested it by playing it 1197 times.

  • Analyzing Car Crash Data

    Multinomial Experiments #11 Randomly selected deaths from car crashes were obtained and the results are included in the table below.

  • Chi-square test of independence, goodness of fit

    121430 Chi-square test of independence, goodness of fit 1) Suppose we have a multinomial population with four categories: A, B, C, and D. The null hypothesis is that the proportion of items is the same in every category.

  • Chi-Square and Hypothesis Testing

    257698 Chi-Square and Hypothesis Testing A) When will you use a Goodness-of-fit Chi-Square distribution? b) What are the characteristics of chi-square distribution?

View More Related Solutions