Statistics Test

Result

Statistics Test - 6

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Weekly Quiz Competition

Question 1
1 / -0

If x, y and z represent the mode, the median and the mean respectively of a certain set of observations, which of the following relationships holds true?

A
x = 3y – 2z

B
x = 3z – 2y

C
x = 2z – 3y

D
x = 3y + 2z

Solution

Mode = 3 Median – 2 Mean
⇒ x = 3y – 2z (Given, Mode = x, Median = y and Mean = z)
Question 2
1 / -0

Which of the following options is the mode of 13, 11, 22, 39, 76, 39, 21 and 12?

A
11

B
65

C
76

D
39

Solution

Mode is the observation that occurs most frequently in the given data.
In the given data, the observation 39 occurs most frequently, i.e. twice.
Therefore, mode = 39
Question 3
1 / -0

Which of the following options represents the mode of 7, 8, 9, 7, 10, 11, 13, 8, 9, 7, 10 and 7?

A
7

B
6

C
13

D
8.5

Solution

Mode is the observation that occurs most frequently in the given data.
Here, number 7 occurs most frequently (4 times) in the given data.
⇒ Mode = 7