Need help in Mean, Probability & SD

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Discussion Overview

The discussion revolves around a statistical problem involving the calculation of probability distribution, mean, and standard deviation based on placement data from a business school for the years 1996, 1997, and 1998. The problem is framed in the context of selecting students at random and analyzing their job placement outcomes.

Discussion Character

  • Homework-related
  • Debate/contested

Main Points Raised

  • One participant presents a statistical problem asking for the probability distribution, mean, and standard deviation of a random variable X, which represents the number of students securing jobs with multinationals over three years.
  • Another participant requests answers to the same problem, reiterating the original question without providing any solutions or attempts.
  • A third participant questions the relevance of the inquiry, suggesting that it is an old question and implies that it should have been posted in a different forum if it pertains to homework.
  • A later reply notes the age of the thread, indicating that it may not be actively monitored or relevant anymore.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the problem itself, as the discussion primarily consists of requests for answers and comments on the appropriateness of the question's posting rather than substantive contributions to solving the problem.

Contextual Notes

The discussion lacks any mathematical attempts or solutions provided by participants, and there are no clear assumptions or methodologies outlined for addressing the statistical problem presented.

Who May Find This Useful

Readers interested in statistical problems related to probability distributions, mean, and standard deviation, particularly in the context of educational data analysis.

sumans
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The placement data of a business school suggest that the percentage of students securing a job with a multinational during the years 1996, 1997 and 1998 are 20%, 30% and 40% respectively. One student is chosen at random from the graduating batch of each year. Let X be the number of students, out of the three so selected who had secured a job with a multinational. Calculate the following:

a) The probability distribution of X
b) The Mean of X
c) The Standard Deviation of X
 
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Can anyone post answer of this?

sumans said:
The placement data of a business school suggest that the percentage of students securing a job with a multinational during the years 1996, 1997 and 1998 are 20%, 30% and 40% respectively. One student is chosen at random from the graduating batch of each year. Let X be the number of students, out of the three so selected who had secured a job with a multinational. Calculate the following:

a) The probability distribution of X
b) The Mean of X
c) The Standard Deviation of X
 
panky05 said:
Can anyone post answer of this?

Are you asking for sumans? Can't sumans speak for him/herself? In any case, his/her question is over 4 years old and if this was a homework question, it should have been posted in that forum. When posting questions, the poster should show an attempt at a solution.
 
Last edited:
This thread is 4 years old.
 

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