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Subject: Maths, asked on 29/12/21

Maths Questions 3

Subject: Maths, asked on 20/11/21

Answer this question please

Subject: Maths, asked on 12/11/21

Please answer the question using the property that adding or subtracting a positive number from each observation does not affect the variance.

Subject: Maths, asked on 29/10/21

Ans required fast pls....

Subject: Maths, asked on 27/10/21


 plz answer . 
 

Subject: Maths, asked on 27/10/21

 answer for 2 questions

Subject: Maths, asked on 24/10/21

Question 2.
The algebraic sum of the deviation of 20 observations measured from 30 is 2. So,
the mean of observations is
(a) 30.0
(b) 30.1
(c) 30.2
(d) 30.3

Subject: Maths, asked on 24/10/21

The mean of 5 observations is 3 and variance is 2. If three of the five
observations are 1, 3, 5, find the other two.
a) 2, 6
b) 3, 3
c) 1, 5
d) 2, 4
 

Subject: Maths, asked on 24/10/21

The mean and Standard deviation of a sample were found to be 9.5 and 2.5,
respectively. Later, an additional observation 15 was added to the original data. Find
the S.D. of the 11 observation.
a) 2.6
b) 2.8
c) 2.86
d) 3.24

Subject: Maths, asked on 23/10/21

Assuming the variance of four numbers w, x, y, and z as 9. Find the variance of
5w, 5x, 5y and 5z.

a) 225
b) 5/9
c) 9/5
d) 54

Subject: Maths, asked on 23/10/21

The mean of two samples of the sizes 250 and 320 were found to be 20,12
respectively. Their standard deviations were 2 & 5, respectively. Find the variance of
combined sample of size 650.

Subject: Maths, asked on 23/10/21

In a class there are 20 juniors, 15 seniors and 5 graduate students. If the junior averaged 65 in the midterm exam, the senior averaged 70 and the graduate students averaged 91, then what is the mean of the centre class approximately?

(a) 71

(b) 74

(c) 70

(d) 72

Subject: Maths, asked on 20/10/21

Plz solve thia question. ..

Subject: Maths, asked on 19/10/21

Explain with eg class 11 mean deviation?

Subject: Maths, asked on 18/10/21

Plz give some project ideas on the topic "Mathamedia" relating math and media

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