The first quartile of a data set is 2.5. which statement about the data values is true?
1 answer:
Answer:
The correct option is D.
Step-by-step explanation:
In a data set we have three quartiles and the second quartile is known as median.
First quartile Q₁ divides the data set in 1:3. It means of the data set are less than or equal to Q₁ and
of the data set are more than or equal to Q₁.
Second quartile Q₂ divides the data set in 1:1. It means of the data values are less than or equal to Q₂ and
of the data values are more than or equal to Q₂.
Third quartile Q₃ divides the data set in 3:1. It means of the data values are less than or equal to Q₃ and
of the data values are more than or equal to Q₃.
It is given that first quartile of a data set is 2.5. It means of the data set are less than or equal to 2.5 and
of the data set are more than or equal to 2.5.
Therefore the correct option is D.
You might be interested in
Answer:
0.2
Step-by-step explanation:
If two number cubes as tossed then the total possible out comes are
Total = {(1,1),(2,1),(3,1),(4,1),(5,1),(6,1),(1,2),(2,2),(3,2),(4,2),(5,2),(6,2),(1,3),(2,3),(3,3),(4,3),(5,3),(6,3),(1,4),(2,4),(3,4),(4,4),(5,4),(6,4),(1,5),(2,5),(3,5),(4,5),(5,5),(6,5),(1,6),(2,6),(3,6),(4,6),(5,6),(6,6)}
Number of elements in sample space are
n(S)=36
Let A and B represent the following events.
A = The sum will be 4.
A = {(1,3),(2,2),(3,1)}
n(A) = 3
B = The sum is less than or equal to 6.
B = {(1,1),(1,2),(1,3),(1,4),(1,5),(2,1),(2,2),(2,3),(2,4),(3,1),(3,2),(3,3),(4,1),(4,2),(5,1)}
n(B)=15
Intersection of both events is
A∩B = {(1,3),(2,2),(3,1)}
n(A∩B) = 3
We need to find the probability that the sum will be 4, given that the sum is less than or equal to 6.
Therefore, the required probability is 0.2.