# Thread: STA301 assignment no 1 apring 2011 solution

1. ## STA301 assignment no 1 apring 2011 solution

full solution in attachment

Assignment No.1 (Course STA301)
Spring 2011 (Total Marks 30)
Question 1: Marks: 4+3+3=10
i. What are the main goal /Purpose of Statistical Infe
Main goals of statistical inference:
Making inferences about the characteristics that de
group of data
ii. Write down names of methods of allocation the sampl
stratified sampling.
b). Find the missing frequencies and complete table.
3/25
5/25
3/25
17/25
25 --- 1
c) From the following data, represent the different subjects in two
classes and no. of students on various subjects of a college by making
multiple bar charts.
Subjects Englis Mathemati Statistics Pak. Urd
h cs Studies u
Class A 40 33 21 80 19
Class B 50 39 30 68 10
Question 2: Marks: 4+3+3=10
i. Define a bi-model distribution.
A bimodal distribution most commonly arises as a mixture of
two different unimodal distributions (i.e. distributions having
only one mode). In other words, the bimodally distributed
random variable X is defined as Y with probability α or Z with
probability (1 − α), where Y and Z are unimodal random
variables and 0 < α < 1 is a mixture coefficient.
ii. The relation between A.M , G.M and H.M is
. AM ≥ G.M ≥ H.M
Under what situation these are equal.
0
10
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Class A
Class B  Reply With Quote

2. Please PPL check the counting ... there are two many mistakes ....
I dodn't know why ppl post wrong answers in solution file  Reply With Quote

3. it is not formated well. because of some problem.  Reply With Quote

4. well work dear  Reply With Quote

5. oh dear yah old assignment hai new wali nahi hai.  Reply With Quote