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Anjali
Subject: Maths
, asked on 21/5/19
Does correlation always signify cause and effect relationship between the two variables?
Answer
1
Sima Singh Roy
Subject: Maths
, asked on 25/11/17
In the adjoining figure. ABCD is a parallelogram. Find x,y, z and w.
Answer
1
Hetraj Chauhan
Subject: Maths
, asked on 23/8/21
The following are the monthly rents (in ) of 30 shops : 42 49 37 82 37 75 62 54 79 84 75 63 44 74 44 36 69 54 48 74 39 48 45 61 71 47 38 80 51 31. Using the class intervals of equal width in which one class interval being 40 – 50 (excluding 50), construct a frequency table for the above data.
Answer
1
Hetraj Chauhan
Subject: Maths
, asked on 23/8/21
Ayushree sat for six tests and Ananya sar for seven tests. Their percentage scores were : Ayushree : 68 75 70 45 57 77 Ananya : 52 87 64 53 74 81 86 Who has the higher mean score ?
Answer
1
Khushboo
Subject: Maths
, asked on 9/3/18
Answer the icse board question(2018)."DO NOT SEND ANY LINKS". CHAPTER :?STATISTICS. (b) Use Graph paper for this. question. A survey regarding height (in cm) of 60 boys belonging to Class 10 of a school was conducted. The following data was recorded: Height 135 -140 140 -145 145—150 150—155 155 — 160 160 — 165 165 — 170 No. of boys 4 8 20 14 7 6 1 Taking 2 cm = height of 10 cm along one axis and 2 cm = 10 boys along the other axis draw an ogive of the above distribution. Use the graph to estimate the following: (i) the median (ii) lower Quartile (iii) if above 158 cm is considered as the tall boys of the class. Find the number of boys in the class who are tall.
Answer
1
Raju
Subject: Maths
, asked on 25/12/17
Q.Prepare a blank table to show the exports of three companies A,B,C, to the five country U.K., U.S.A., France, Germany in each of the years 1993-96.
[Hint: The exports of three companies to five countries in the year 1993-96]
Country
1993
1994
1995
1996
A B C
A B C
A B C
A B C
1. U.K.
2. U.S. A.
3 France
4. Germany
5 China
Answer
0
Ria Sharma1420
Subject: Maths
, asked on 13/10/17
Answer this 6th question....very urgent...please don't send links.:
6. Find the median weight for the following data:
Weight (in kg)
45
46
48
50
52
54
55
Number of boys
8
5
6
9
7
4
2
Answer
2
Priyanshi
Subject: Maths
, asked on 5/5/19
The following observation have been arranged in ascending order .If the median of the data is 47.5, find the value of x. 17, 21 ,23, 29 ,39, 40 ,x ,50 51,54 ,59,67, 91,93
Answer
1
Soumyajeet Dey
Subject: Maths
, asked on 18/6/18
In a series of tests A appeared for 8 tests but while checking his files he could only find 7 of the 8 tests. If the marks of the tests are 29,26,18,20,27,24,29 .Determine how he scored in the eighth test.
Answer
1
Hetraj Chauhan
Subject: Maths
, asked on 23/8/21
Thirty 16 year old boys were tested to find their pulse rate. The following figures Were obtained for the number of beats per minute. Using the class intervals 51-55, 56-60, etc, of equal width, prepare a frequency table. 55 72 70 66 74 70 74 53 57 62 71 58 68 75 79 68 63 59 54 51 61 66 78 73 59 52 66 60 72 56.
Answer
1
Harsh
Subject: Maths
, asked on 11/1/19
What upper class limit correspond to lower class limits of 3,6,9,12,15
Answer
2
Sachett Singh
Subject: Maths
, asked on 16/5/18
Q).The following table gives the life time in days of 100 electricity tubes of a certain maker.
Find the mean lifetime of electricity tubes.
Answer
0
Priyanshi
Subject: Maths
, asked on 5/5/19
1) find the mean of the first six prime numbers
2)find the mean of the first seven odd prime numbers
Answer
1
Anushka Dhar
Subject: Maths
, asked on 12/11/17
these 3 sums. no 7,8,9
Q7. The mean of 5 numbers is 20. If one number is excluded, mean of the remaining numbers becomes 23. Find the excluded number.
Q8. The mean of 25 observations is 27. If one observation is included, the mean still remains 27. Find the included observation.
Q9. The mean of 5 observations is 15. If the mean of first three observations is 14 and that of the last three is 17, find the third observation.
Answer
3
Ayush
Subject: Maths
, asked on 24/6/18
In a single throw of two dice what is the probability of getting
A sum exceeding 12
A doublet
Sum of two numbers as an even number
Answer
1
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What are you looking for?
[Hint: The exports of three companies to five countries in the year 1993-96]
A B C
A B C
A B C
A B C
2. U.S. A.
3 France
4. Germany
5 China
6. Find the median weight for the following data:
Find the mean lifetime of electricity tubes.
2)find the mean of the first seven odd prime numbers
Q7. The mean of 5 numbers is 20. If one number is excluded, mean of the remaining numbers becomes 23. Find the excluded number.
Q8. The mean of 25 observations is 27. If one observation is included, the mean still remains 27. Find the included observation.
Q9. The mean of 5 observations is 15. If the mean of first three observations is 14 and that of the last three is 17, find the third observation.
A sum exceeding 12
A doublet
Sum of two numbers as an even number