A) 11 done clear
B) 10 done clear
C) 8 done clear
D) 13 done clear
E) None of these done clear
View Solution play_arrowA) 58 done clear
B) 60 done clear
C) 62 done clear
D) 65 done clear
E) None of these done clear
View Solution play_arrowquestion_answer3) Which one among the following statements is/ are correct?
A) The range of the data 7, 1, 3, 8, 9, 13, 18, 19, 4, 3 is 17. done clear
B) In the class interval 12-17, 17-22, 22-27, the number 22 is not included in 17-22. done clear
C) Class size is the difference between the upper and lower class limits. done clear
D) All the above done clear
E) None of these done clear
View Solution play_arrowA) \[\left( k-1 \right)-m\] done clear
B) \[\left( k-1 \right)+m\] done clear
C) \[2\left( k-1 \right)-m\] done clear
D) \[2\left( k+1 \right)-m\] done clear
E) None of these done clear
View Solution play_arrowquestion_answer5) If each observation of the data is decreased by 10, then their mean ________
A) remains the same done clear
B) becomes 10 times the original mean done clear
C) is increased by 10 done clear
D) is decreased by 10 done clear
E) None of these done clear
View Solution play_arrowA) 22\[-\]26 done clear
B) 20\[-\]28 done clear
C) 21\[-\]27 done clear
D) 21\[-\]28 done clear
E) None of these done clear
View Solution play_arrowA) \[\sum\limits_{i=1}^{n}{({{x}_{n}}-\overline{x})}=0\] done clear
B) \[\sum\limits_{i=1}^{n}{({{x}_{n}}-\overline{x})}=1\] done clear
C) \[\overline{x}=\frac{({{x}_{1}}+{{x}_{2}}+{{x}_{3}}+.....+{{x}_{n}})}{n}\] done clear
D) both A and C are correct done clear
E) None of these done clear
View Solution play_arrowA) 9 done clear
B) 5.6 done clear
C) 2.8 done clear
D) 3.4 done clear
E) None of these done clear
View Solution play_arrowA) 25.60 done clear
B) 25.32 done clear
C) 25.72 done clear
D) 25.52 done clear
E) None of these done clear
View Solution play_arrowA) 12 done clear
B) 12.75 done clear
C) 11.75 done clear
D) 13 done clear
E) None of these done clear
View Solution play_arrowA) \[\frac{\overline{a}-\overline{b}}{2}\] done clear
B) \[\overline{\text{a}}\text{+}\overline{\text{b}}\] done clear
C) \[\frac{\overline{a}+\overline{b}}{2}\] done clear
D) \[\frac{\overline{a}+\overline{b}}{n}\] done clear
E) None of these done clear
View Solution play_arrowA) 15 done clear
B) 18 done clear
C) 8 done clear
D) 5 done clear
E) None of these done clear
View Solution play_arrowTwo coins are tossed 500 times the outcomes are recorded as below: | |||
No. of tails | 0 | 1 | 2 |
Frequency | 120 | 175 | 205 |
Based on this information, the probability for at least 1 tail is _________ |
A) \[\frac{1}{25}\] done clear
B) \[\frac{17}{25}\] done clear
C) \[\frac{18}{25}\] done clear
D) \[\frac{19}{25}\] done clear
E) None of these done clear
View Solution play_arrowA) 7.4 done clear
B) 9.2 done clear
C) 8.4 done clear
D) 8.6 done clear
E) None of these done clear
View Solution play_arrowFind the value of \[3{{f}_{1}}-{{f}_{2}}\] if mean for the following frequency distribution is 1.46. | |||||||
Variable | 0 | 1 | 2 | 3 | 4 | 5 | Total |
Frequency | 46 | 76 | 38 | f1 | 10 | f2 | 200 |
A) 60 done clear
B) 70 done clear
C) 80 done clear
D) 65 done clear
E) None of these done clear
View Solution play_arrowquestion_answer16) The median of the data when mean and mode are respectively 45 and 36 is
A) 38 done clear
B) 42 done clear
C) 49 done clear
D) 39 done clear
E) None of these done clear
View Solution play_arrowA) 16.38 done clear
B) 17.48 done clear
C) 18.58 done clear
D) 19.68 done clear
E) None of these done clear
View Solution play_arrowA) 3.5 done clear
B) 5 done clear
C) 5.5 done clear
D) 6 done clear
E) None of these done clear
View Solution play_arrowA) Mean = 4.49 done clear
B) Median = 4.45 done clear
C) Median = 4.5 done clear
D) Both A and B done clear
E) None of these done clear
View Solution play_arrowA) 1.5 done clear
B) 2.5 done clear
C) 3.5 done clear
D) 4.5 done clear
E) None of these done clear
View Solution play_arrowFor the observations 21, 5, 8, 15, 52, 68, 45, x, 48, y, 18, 9. Which of the following will not change? (Where x lies between 20 and 30 and y lies between 30 and 40) |
Quartile deviation. Mean, Median, Range |
A) Quartile deviation done clear
B) Mean done clear
C) Median done clear
D) Range done clear
E) None of these done clear
View Solution play_arrowA) 17 : 8 done clear
B) 17 : 16 done clear
C) 8 : 33 done clear
D) 18 : 33 done clear
E) None of these done clear
View Solution play_arrowThe mean deviation for the following data about median is ________. | |||||
Class Interval | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 |
Frequency | 16 | 8 | 10 | 12 | 4 |
A) 11.04 done clear
B) 13.08 done clear
C) 10.02 done clear
D) 12.98 done clear
E) None of these done clear
View Solution play_arrowA) 3q+2p done clear
B) \[\frac{3q+2p}{6}\] done clear
C) \[\frac{3q+2p}{3}\] done clear
D) \[\frac{3p+2q}{6}\] done clear
E) None of these done clear
View Solution play_arrowquestion_answer25) The probability that a non-leap year has exactly 53 Tuesdays is ________
A) \[\frac{2}{7}\] done clear
B) \[\frac{1}{7}\] done clear
C) \[\frac{3}{7}\] done clear
D) \[\frac{1}{6}\] done clear
E) None of these done clear
View Solution play_arrowA) 52.8 done clear
B) 50.6 done clear
C) 51.8 done clear
D) 531.8 done clear
E) None of these done clear
View Solution play_arrowIn a medical examination of students of a class, the following blood groups are recorded: | ||||
Blood group | A | B | O | AB |
No. of students | 35 | 28 | 19 | 13 |
A student is selected at random from the class. The probability that he/ she has blood group other than ?O? is _______ |
A) \[\frac{1}{5}\] done clear
B) \[\frac{7}{19}\] done clear
C) \[\frac{13}{95}\] done clear
D) \[\frac{4}{5}\] done clear
E) None of these done clear
View Solution play_arrowDistance: Consider the mortality table given below: | |
Age (in years) | Number of persons surviving out of a sample of one million |
60 | 17384 |
61 | 12560 |
62 | 9008 |
63 | 5980 |
64 | 4050 |
65 | 2730 |
Based on above information answer the following questions: |
The probability that a person 'aged 61' will die within a year is ________ |
A) \[\frac{9008}{12560}\] done clear
B) \[\frac{222}{785}\] done clear
C) \[\frac{9008}{17384}\] done clear
D) \[\frac{3552}{9008}\] done clear
E) None of these done clear
View Solution play_arrowDistance: Consider the mortality table given below: | |
Age (in years) | Number of persons surviving out of a sample of one million |
60 | 17384 |
61 | 12560 |
62 | 9008 |
63 | 5980 |
64 | 4050 |
65 | 2730 |
A) \[\frac{1365}{4504}\] done clear
B) \[\frac{6278}{2730}\] done clear
C) \[\frac{2730}{6278}\] done clear
D) \[\frac{1}{4}\] done clear
E) None of these done clear
View Solution play_arrowDistance: Consider the mortality table given below: | |
Age (in years) | Number of persons surviving out of a sample of one million |
60 | 17384 |
61 | 12560 |
62 | 9008 |
63 | 5980 |
64 | 4050 |
65 | 2730 |
A) 'aged 60' will die within two years. done clear
B) 'aged 65' will die within a year. done clear
C) 'aged 62' will die within 3 years. done clear
D) 'aged 60' will die within 5 years. done clear
E) None of these done clear
View Solution play_arrowDirections: Ages of employers in an organization is distributed as follows: | |||||
Age (in years) | 20-29 | 30-39 | 40-49 | 50-59 | 60 & above |
No. of workers | 42 | 28 | 14 | 8 | 4 |
A) \[\frac{1}{8}\] done clear
B) \[\frac{3}{5}\] done clear
C) \[\frac{7}{8}\] done clear
D) \[\frac{4}{7}\] done clear
E) None of these done clear
View Solution play_arrowDirections: Ages of employers in an organization is distributed as follows: | |||||
Age (in years) | 20-29 | 30-39 | 40-49 | 50-59 | 60 & above |
No. of workers | 42 | 28 | 14 | 8 | 4 |
A) \[\frac{5}{8}\] done clear
B) \[\frac{35}{48}\] done clear
C) \[\frac{35}{96}\] done clear
D) \[\frac{48}{92}\] done clear
E) None of these done clear
View Solution play_arrowDirections: Ages of employers in an organization is distributed as follows: | |||||
Age (in years) | 20-29 | 30-39 | 40-49 | 50-59 | 60 & above |
No. of workers | 42 | 28 | 14 | 8 | 4 |
A) \[\frac{8}{9}\] done clear
B) \[\frac{9}{14}\] done clear
C) \[\frac{1}{16}\] done clear
D) \[\frac{9}{16}\] done clear
E) None of these done clear
View Solution play_arrowFollowing are the marks obtained (Out of 50) by the students in a class. | |
Marks | No. of Students |
10-20 | 8 |
20-30 | X |
30-40 | 9 |
40-50 | 6 |
One student from the class is selected at random. If the, probability that his marks is 20 or more but less than 40, is \[\frac{\mathbf{5}}{\mathbf{7}}\], then find the value of x. |
A) 13 done clear
B) 18 done clear
C) 6 done clear
D) 26 done clear
E) None of these done clear
View Solution play_arrowA) \[\frac{1}{5}\] done clear
B) \[\frac{4}{5}\] done clear
C) \[\frac{1}{4}\] done clear
D) \[\frac{2}{5}\] done clear
E) None of these done clear
View Solution play_arrowA) 18, 12 done clear
B) 12, 18 done clear
C) 14, 16 done clear
D) 16, 14 done clear
E) None of these done clear
View Solution play_arrowA) 8 : 9 done clear
B) 9 : 7 done clear
C) 4 : 1 done clear
D) 3 : 5 done clear
E) None of these done clear
View Solution play_arrowThe mean of the following distribution is 44.35 | |
x | F |
10 | 18 |
25 | a-3 |
40 | 27 |
55 | a-6 |
70 | 34 |
The value of a is _______ |
A) 12 done clear
B) 9 done clear
C) 15 done clear
D) 18 done clear
E) None of these done clear
View Solution play_arrowThe frequency distribution of the marks obtained by 56 students in a test carrying 50 marks is given below: | |||||
Marks | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 |
No. of students | 7 | 14 | 13 | 12 | 10 |
Find the mode of the data. |
A) 18.25 done clear
B) 19.65 done clear
C) 18.75 done clear
D) 20.25 done clear
E) None of these done clear
View Solution play_arrowA) \[\frac{2}{13}\text{ }\] done clear
B) \[\frac{1}{52}\text{ }\] done clear
C) \[\frac{1}{26}\text{ }\] done clear
D) \[\frac{1}{13}\text{ }\] done clear
E) None of these done clear
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