Advertisements
Advertisements
प्रश्न
If the arithmetic mean of 8, 4, x, 6, 2, 7 is 5, then the value of x is ______.
Advertisements
उत्तर
If the arithmetic mean of 8, 4, x, 6, 2, 7 is 5, then the value of x is 3.
Explanation:
We know that,
Mean = `"Sum of all observations"/"Total number of observations"`
⇒ `5 = (8 + 4 + x + 6 + 2 + 7)/6` ...[∵ Mean = 5, given]
⇒ 30 = 27 + x
⇒ 30 – 27 = x
⇒ 3 = x
∴ x = 3
Hence, the value of x is 3.
APPEARS IN
संबंधित प्रश्न
If `barx` is the mean of x1, x2 ............xn and `bary` is the mean of y1, y2, …….yn and `barz` is the mean of x1, x2 ............xn, y1, y2, ……….yn then `barz` =?
Ashish studies for 4 hours, 5 hours, and 3 hours respectively on three consecutive days. How many hours does he study daily on average?
The mean of a, b, c, d and e is 28. If the mean of a, c and e is 24, then mean of b and d is
If the average selling price of 15 books is ₹ 235, then the total selling price is __________
The average of integers between −10 to 10 is __________
Find the mean of the following data.
5.1, 4.8, 4.3, 4.5, 5.1, 4.7, 4.5, 5.2, 5.4, 5.8, 4.3, 5.6, 5.2, 5.5
The mean of three numbers is 40. All the three numbers are different natural numbers. If lowest is 19, what could be highest possible number of remaining two numbers?
Mean can never be a fraction.
Find the mean of the first ten even natural numbers.
In a class of 100 students there are 70 boys whose average marks in a subject are 75. If the average marks of the complete class is 72, then what is the average of the girls?
