MathematicsStatistics (NTSE Stage1 (StateLevel) ScholasticAptitude & Language Comprehension): Questions 1  6 of 8
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 1042 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 450.00 or
Question number: 1
» Mathematics » Statistics
Question
In a bag containing 5 red, 4 black and 6 orange balls and a ball is selected at random, what is the probability of getting a nonred ball?
Choices
Choice (4)  Response  

a.  1/5 

b.  1/3 

c.  4/15 

d.  Question does not provide sufficient data or is vague 

Question number: 2
» Mathematics » Statistics
Question
If the mean of five observations x, x + 2, x + 4, x + 6 and x + 8 is 11, then the mean of first three observations is
Choices
Choice (4)  Response  

a.  11 

b.  13 

c.  9 

d.  12 

Question number: 3
» Mathematics » Statistics
Question
If the geometric mean of three observations 40, 50 and x is 10, then the value of x is
Choices
Choice (4)  Response  

a.  4 

b.  2 

c.  0.5 

d.  6 

Question number: 4
» Mathematics » Statistics
Question
A, B and C are three sets of value of x.
A: 2, 3, 7, 1, 3, 2, 3 B: 7, 5, 9, 12, 5, 3, 8 C: 4, 4, 11, 7, 2, 3, 4
Select the correct statement from among the following.
Choices
Choice (4)  Response  

a.  Median, mean and mode of A are same 

b.  Median of B is equal to mode of A 

c.  Mean of C is equal to median of B 

d.  Mean of A is equal to mode of C 

Question number: 5
» Mathematics » Statistics
Question
The mean of a set of number is x. If each number is divided by 3, then the new mean is
Choices
Choice (4)  Response  

a. 


b.  x 

c.  3x 

d.  x + 3 

Question number: 6
» Mathematics » Statistics
Question
The geometric mean of two numbers is 8 and their harmonic mean is 6.4. The numbers are
Choices
Choice (4)  Response  

a.  4, 16 

b.  2, 8 

c.  4, 8 

d.  Question does not provide sufficient data or is vague 
