हिंदी

Find the mean of: 5, 2.4, 6.2, 8.9, 4.1 and 3.4 - Algebra

Advertisements
Advertisements

प्रश्न

Find the mean of: 5, 2.4, 6.2, 8.9, 4.1 and 3.4

योग

उत्तर

Mean of 5, 2.4, 6.2, 8.9, 4.1 and 3.4

Required mean = `("Sum of data values")/("No. of. data values")`

`= (5 + 2.4 + 6.2 + 8.9 + 4.1 + 3.4)/6`

`= 30/6`

= 5

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2021-2022 (March) Model set 3 by shaalaa.com

संबंधित प्रश्न

If the mean of the following data is 20.6. Find the value of p.

x 10 15 P 25 35
f 3 10 25 7 5

Find the missing value of p for the following distribution whose mean is 12.58

x 5 8 10 12 P 20 25
f 2 5 8 22 7 4 2

Find the value of p, if the mean of the following distribution is 20.

x 15 17 19 20+P 23
f 2 3 4 5P 6

The following table gives the number of boys of a particular age in a class of 40 students. Calculate the mean age of the students

Age (in years) 15 16 17 18 19 20
No. of students 3 8 10 10 5 4

Five coins were simultaneously tossed 1000 times and at each toss the number of heads were observed. The number of tosses during which 0, 1, 2, 3, 4 and 5 heads were obtained are shown in the table below. Find the mean number of heads per toss.

No. of heads per toss No. of tosses
0 38
1 144
2 342
3 287
4 164
5 25
Total 1000

Find the mean of each of the following frequency distributions

Class interval 0 - 8 8 - 16 16 - 24 24 - 32 32 - 40
Frequency 6 7 10 8 9

If the mean of 5 observation x, x + 2, x + 4, x + 6and x + 8 , find the value of x.


Find the mean of the following data, using direct method:

Class 0-100 100-200 200-300 300-400 400-500
Frequency  6 9 15 12 8

During a medical check-up, the number of heartbeats per minute of 30 patients were recorded and summarized as follows:

Number of
heartbeats
per minute
65 – 68 68 – 71 71 – 74 74 – 77 77 – 80 80 – 83 83 - 86
Number of
patients
2 4 3 8 7 4 2

Find the mean heartbeats per minute for these patients, choosing a suitable method.


If for certain frequency distribution, Median = 156 and Mode = 180, Find the value of the Mean. 


In X standard, there are three sections A, B and C with 25, 40 and 35 students respectively. The average marks of section A is 70%, section B is 65% and of section C is 50%. Find the average marks of the entire X standard.


Find the mean of the following distribution:

x 10 30 50 70 89
f 7 8 10 15 10

Find the mean wage of a worker from the following data:

Wages (In ₹) 1400 1450 1500 1550 1600 1650 1700
Number of workers 15 20 18 27 15 3 2

A car travels from city A to city B, 120 km apart at an average speed of 50km/h. It then makes a return trip at an average speed of 60km/h. It covers another 120km distance at an average speed of 40km/h. The average speed over the entire 360km will be ______.


If mean = (3median - mode) . k, then the value of k is ______.


The value of `sum_(i=1)^nx_i` is ______.


The mean of the following distribution is

xi 10 13 16 19
fi 2 5 7 6

The formula for finding mean by direct method is `(sum(AxxB))/(sumA)` where B and A are respectively.


In the formula `barx = a + (f_i d_i)/f_i`, for finding the mean of grouped data di’s are deviations from a of ______.


The lengths of 40 leaves of a plant are measured correct to the nearest millimeter, and the data obtained is represented in the following table:

Length (in mm) Number of leaves
118−126
127–135 5
136−144 9
145–153 12
154–162 5
163–171 4
172–180 2

Find the mean length of the leaves.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×