MCQ 11 Mark
The median of the first 49 natural numbers is
- A24
- B24.5
- ✓25
- D25.5
Answer
View full question & answer→Correct option: C.
25
C
Questions
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10 questions · timed · auto-graded
MCQ 21 Mark
The Empirical formula for calculating mode is
- AMode = Mean + Median
- ✓Mode = 3(Median)-2 (Mean)
- CMode = 2(Median)-3 (Mean)
- DMode = Median + 3(Mean)
Answer
View full question & answer→Correct option: B.
Mode = 3(Median)-2 (Mean)
B
MCQ 31 Mark
For n observations arranged in an array, if n is odd, then median is the value of observation.
- A$\left(\frac{n}{2}\right) t h$
- ✓$\left(\frac{n+1}{2}\right) t h$
- C$\left(\frac{n}{2}+1\right) t h$
- D$\left(\frac{n}{2}-1\right) t h$
Answer
View full question & answer→Correct option: B.
$\left(\frac{n+1}{2}\right) t h$
B
MCQ 41 Mark
The mean of $n$ observations $x_1, x_2, \ldots, x_n$ is equal to
- A$n \Sigma x_i$
- B$n \sum x_i{ }^2$
- C$\Sigma x_i$
- ✓$\frac{\Sigma x_i}{n}$
Answer
View full question & answer→Correct option: D.
$\frac{\Sigma x_i}{n}$
D
MCQ 51 Mark
The range of the data given below, is 16, 5, 27, 15, 11, 56, 28, 17, 35, 8, 43
- A5
- B28
- ✓51
- D56
Answer
View full question & answer→Correct option: C.
51
C
MCQ 61 Mark
The bar graph displays the average salary of employees based on their department. If the difference in the average salary of an employee in Department B and Department D is ₹ 40,000, what must be the scale of the bar graph?
- A1 unit = ₹100
- B1 unit = ₹400
- C1 unit = ₹1000
- ✓1 unit = ₹4000
Answer
View full question & answer→Correct option: D.
1 unit = ₹4000
D
MCQ 71 Mark
Read the statements carefully and select the correct option.
Statement-1: Mode is most frequently occurring value in a given data. It is always less than the median of the data.
Statement-2: Median of the data (1, 2, 2, 3, 2, 3, 4, 2, 3, 2, 2, 3, 2, 1, 2, 2, 3, 2, 3, 3, 2, 3, 3, 3) is less than the mode.
Statement-1: Mode is most frequently occurring value in a given data. It is always less than the median of the data.
Statement-2: Median of the data (1, 2, 2, 3, 2, 3, 4, 2, 3, 2, 2, 3, 2, 1, 2, 2, 3, 2, 3, 3, 2, 3, 3, 3) is less than the mode.
- AStatement-1 is true and Statement-2 is false.
- BStatement-1 is false and Statement-2 is true.
- ✓Both Statement-1 and Statement-2 are false.
- DBoth Statement-1 and Statement-2 are true.
Answer
View full question & answer→Correct option: C.
Both Statement-1 and Statement-2 are false.
C
MCQ 81 Mark
If the arithmetic mean of runs scored by Sunil in 11 matches is 49, then the runs scored by him in 11th match is :
| Number of matches | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| Runs scored | 84 | 80 | 0 | 10 | 60 | 75 | 50 | 100 | 20 | 40 | x |
- ✓20
- B40
- C80
- D50
Answer
View full question & answer→Correct option: A.
20
A
MCQ 91 Mark
There were 12 tests conducted in a semester. Anupam created a bar graph to represent the rank he secured on each test. The information gathered from the bar graph is given below.
Anupam secured the first rank twice.
Anupam secured the fifth rank 6 times.
Anupam secured the third rank 3 times.
Anupam secured the fourth rank only once.
Which question can be answered using the mode of the data on the bar graph?
Anupam secured the first rank twice.
Anupam secured the fifth rank 6 times.
Anupam secured the third rank 3 times.
Anupam secured the fourth rank only once.
Which question can be answered using the mode of the data on the bar graph?
- AWhich rank did Anupam secure the most?
- ✓How many times did Anupam secure the fifth rank?
- CHow many times did Anupam secure the fourth rank?
- DWhich rank did Anupam secure least number of times?
Answer
View full question & answer→Correct option: B.
How many times did Anupam secure the fifth rank?
B
MCQ 101 Mark
In the past 10 days, the average temperature on one of the days was much lower than on the rest of the days. Given the data for the average daily temperature of the past 10 days, which statistic can be used to find the central value of the data?
- Amean
- ✓median
- Cmode
- Drange
Answer
View full question & answer→Correct option: B.
median
B