A) \[\frac{2n+1}{3}\] done clear
B) \[\frac{n+1}{2}\] done clear
C) \[\frac{n(n+1)}{2}\] done clear
D) \[\frac{(n+1)(2n+1)}{6}\] done clear
View Solution play_arrowquestion_answer2) What is the mean of -8,-4, 4 and 8?
A) 1 done clear
B) Zero done clear
C) 8 done clear
D) 2 done clear
View Solution play_arrowquestion_answer3) Find the mean of the first six multiples of 3.
A) 63 done clear
B) 11.5 done clear
C) 10.5 done clear
D) 60 done clear
View Solution play_arrowA) 36 done clear
B) 37.5 done clear
C) 36.5 done clear
D) 38.5 done clear
View Solution play_arrowquestion_answer5) Find the mean of the first six prime numbers.
A) 68.3 done clear
B) 6.71 done clear
C) 7 done clear
D) 6.83 done clear
View Solution play_arrowA) \[n\bar{X}-nk\] done clear
B) \[n\bar{X}-k\] done clear
C) \[\bar{X}-nk\] done clear
D) \[\bar{X}-k\] done clear
View Solution play_arrowA) 70, 30 done clear
B) 30, 70 done clear
C) 80, 20 done clear
D) 60, 40 done clear
View Solution play_arrowA) 20 done clear
B) 15 done clear
C) 160 done clear
D) 2 done clear
View Solution play_arrowA) 2 done clear
B) 3 done clear
C) 1 done clear
D) Any natural number done clear
View Solution play_arrowA) 22 done clear
B) 23 done clear
C) 12 done clear
D) 11 done clear
View Solution play_arrowA) \[nM+a\] done clear
B) \[\frac{nM-a}{2}\] done clear
C) \[\frac{nM+a}{2}\] done clear
D) \[\frac{nM-a}{4}\] done clear
View Solution play_arrowquestion_answer12) Identify the mode of the given distribution.
Marks | 4 | 5 | 6 | 7 | 8 |
Number of Students | 3 | 5 | 10 | 6 | 1 |
A) 7 done clear
B) 1 done clear
C) 8 done clear
D) 6 done clear
View Solution play_arrowLength of heart (in mm) | No. of patients |
120 | 7 |
121 | 9 |
122 | 15 |
123 | 12 |
124 | 6 |
125 | 11 |
A) 144 done clear
B) 122 done clear
C) 156 done clear
D) 114 done clear
View Solution play_arrowA) 27 done clear
B) 37 done clear
C) 23 done clear
D) 5 done clear
View Solution play_arrowA) 42 done clear
B) 22 done clear
C) 10 done clear
D) 32 done clear
View Solution play_arrowA) 138 done clear
B) 100 done clear
C) 20 done clear
D) 38 done clear
View Solution play_arrowA) \[\bar{x}+2a\] done clear
B) \[\bar{x}-2a\] done clear
C) \[\frac{{\bar{x}}}{2}+2a\] done clear
D) \[\frac{{\bar{x}}}{2}+2a\] done clear
View Solution play_arrowA) 52 kg done clear
B) 54 kg done clear
C) 57 kg done clear
D) 59 kg done clear
View Solution play_arrowA) 6.15 done clear
B) 60.7 done clear
C) 61.2 done clear
D) 6.72 done clear
View Solution play_arrowA) \[\overline{x}-a\] done clear
B) \[\overline{x}\] done clear
C) \[a\overline{x}\] done clear
D) \[\frac{\overline{x}}{a}\] done clear
View Solution play_arrowquestion_answer21) In the frequency distribution, discrete data is given.
Variable \[(x)\] | 0 | 1 | 2 | 3 | 4 | 5 |
Frequency \[(f)\] | \[x\] | 20 | 40 | 40 | 20 | 4 |
A) 0 done clear
B) 1 done clear
C) 3 done clear
D) 4 done clear
View Solution play_arrowA) 40 done clear
B) 20 done clear
C) 60 done clear
D) 70 done clear
View Solution play_arrowA) 45% done clear
B) 50% done clear
C) 51.4% (approx) done clear
D) 54.6% (approx) done clear
View Solution play_arrowA) 82 done clear
B) 48 done clear
C) 78 done clear
D) 84 done clear
View Solution play_arrowA) 35 done clear
B) 65 done clear
C) 68 done clear
D) 86 done clear
View Solution play_arrow11 | 6 | 22 | 7 | 10 | 6 | 15 |
A) Their median is 11. done clear
B) Their mean is 11. done clear
C) Their range is 16. done clear
D) Their mode is 6. done clear
View Solution play_arrowA) 50 done clear
B) 49 done clear
C) 45 done clear
D) 40 done clear
View Solution play_arrowA) \[\frac{165}{31}\] done clear
B) 5 done clear
C) 7 done clear
D) \[\frac{137}{27}\] done clear
View Solution play_arrowA) 2 done clear
B) 3 done clear
C) 4 done clear
D) 5 done clear
View Solution play_arrowquestion_answer30) What is the mean of the first 'n' natural numbers?
A) \[n+\frac{1}{2}\] done clear
B) \[n(n+1)\] done clear
C) \[\frac{1}{2}(n+1)\] done clear
D) \[\frac{(n+1)}{2n}\] done clear
View Solution play_arrowquestion_answer31) What is the arithmetic mean of 20 fours, 40 fives, 30 sixes and 10 tens?
A) 50 done clear
B) 25 done clear
C) 5.6 done clear
D) 33 done clear
View Solution play_arrowquestion_answer32) Find the value of\['x'\]if the mean of\[x+2,2x+3,\]\[3x+4\]and\[4x+5\]is\[x+2\].
A) 2 done clear
B) 1 done clear
C) 3 done clear
D) -1 done clear
View Solution play_arrowA) 7 done clear
B) 8 done clear
C) 9 done clear
D) 11 done clear
View Solution play_arrowquestion_answer34) Which of the following is true about the mode of a given data?
A) It may or may not exist for a given data. done clear
B) It is always unique. done clear
C) It is very difficult to compute mode. done clear
D) We cannot calculate mode without the empirical formula. done clear
View Solution play_arrowA) 14.5 done clear
B) 13 done clear
C) 15 done clear
D) 13.5 done clear
View Solution play_arrowA) 30 kg done clear
B) 35 kg done clear
C) 25 kg done clear
D) 20 kg done clear
View Solution play_arrowA) \[x+5\] done clear
B) \[\frac{x}{5}\] done clear
C) \[x-5\] done clear
D) \[5x\] done clear
View Solution play_arrowA) 12 done clear
B) 4 done clear
C) 24 done clear
D) 6 done clear
View Solution play_arrowA) 8 done clear
B) 12 done clear
C) 0 done clear
D) 10 done clear
View Solution play_arrowA) 15 done clear
B) 12 done clear
C) 16 done clear
D) 19 done clear
View Solution play_arrowA) 6 done clear
B) 8 done clear
C) 4 done clear
D) 24 done clear
View Solution play_arrowA) 3 done clear
B) 4 done clear
C) 5 done clear
D) 4.5 done clear
View Solution play_arrowA) 3:2 done clear
B) 5:2 done clear
C) 3:5 done clear
D) 2:3 done clear
View Solution play_arrowquestion_answer44) What is the mode of the data 3,6,3,4,6,4, 3,5,6,5, \[x\] and \[{{x}^{2}}\]?
A) 4 or 5 only done clear
B) 3 or 6 only done clear
C) 3 or 5 only done clear
D) 3, 4 or 6 done clear
View Solution play_arrowA) \[\frac{3}{4}\] done clear
B) \[\frac{7}{12}\] done clear
C) \[\frac{2}{3}\] done clear
D) \[\frac{1}{6}\] done clear
View Solution play_arrowquestion_answer46) What is the median of the first 100 natural numbers?
A) 50.5 done clear
B) 50 done clear
C) 52 done clear
D) 51 done clear
View Solution play_arrowA) 24 done clear
B) 6 done clear
C) 12 done clear
D) 30 done clear
View Solution play_arrowquestion_answer48) What is the arithmetic mean of 30 20 32 16 and 27?
A) 23 done clear
B) 24 done clear
C) 25 done clear
D) 26 done clear
View Solution play_arrowquestion_answer49) Find the mode of 32, 20, 32, 16, 27 and 32.
A) 20 done clear
B) 27 done clear
C) 30 done clear
D) 32 done clear
View Solution play_arrowquestion_answer50) Find the median of \[15\frac{2}{3}.15.03,15,15\frac{1}{3}\]and 15.3.
A) \[15\frac{1}{3}\] done clear
B) 15.3 done clear
C) \[15\frac{2}{3}\] done clear
D) 15.03 done clear
View Solution play_arrowquestion_answer51) If for a given data median is 125.6 and mean is 128, find mode.
A) 120.8 done clear
B) 128.0 done clear
C) 108.2 done clear
D) 180.2 done clear
View Solution play_arrowquestion_answer52) What is the arithmetic mean of \[a+2\], a and \[a-2\]?
A) \[\text{a}+\text{2}\] done clear
B) a done clear
C) \[\text{a}-\text{2}\] done clear
D) 3a done clear
View Solution play_arrowquestion_answer53) The mean of 9, 11, 13, p, 18 and 19 is p. Find the value of 'p'.
A) 12 done clear
B) 13 done clear
C) 14 done clear
D) 15 done clear
View Solution play_arrowquestion_answer54) What is the mode of 10, 2, 8, 6, 7, 8, 9, 10, 10, 11 and10?
A) 10 done clear
B) 12 done clear
C) \[14\] done clear
D) 8 done clear
View Solution play_arrowquestion_answer55) Which of the following is calculated using mid-values of classes?
A) Mean done clear
B) Median done clear
C) Mode done clear
D) Range done clear
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