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प्रश्न
Let x, y, z be three observations. The mean of these observations is ______.
पर्याय
`(x xx y xx z)/3`
`(x + y + z)/3`
`(x - y - z)/3`
`(x xx y + z)/3`
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उत्तर
Let x, y, z be three observations. The mean of these observations is `underlinebb((x + y + z)/3)`.
Explanation:
Here, x, y and z be three observations.
We know that,
Mean = `"Sum of observations"/"Number of observations"`
= `(x + y + z)/3`
APPEARS IN
संबंधित प्रश्न
Following table shows the points of each player scored in four games:
| Player | Game 1 | Game 2 | Game 3 | Game 4 |
| A | 14 | 16 | 10 | 10 |
| B | 0 | 8 | 6 | 4 |
| C | 8 | 11 | Did not play | 13 |
Now answer the following questions:
- Find the mean to determine A’s average number of points scored per game.
- To find the mean number of points per game for C, would you divide the total points by 3 or by 4? Why?
- B played in all the four games. How would you find the mean?
- Who is the best performer?
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` =?
The number of members in the 40 families in Bhilar are as follows:
1, 6, 5, 4, 3, 2, 7, 2, 3, 4, 5, 6, 4, 6, 2, 3, 2, 1, 4, 5, 6, 7, 3, 4, 5, 2, 4, 3, 2, 3, 5, 5, 4, 6, 2, 3, 5, 6, 4, 2. Prepare a frequency table and find the mean of members of 40 families.
The average of the marks 2, 9, 5, 4, 4, 8, 10 is ____________
Arithmetic mean of 15 observations was calculated as 85. In doing so an observation was wrongly taken as 73 for 28. What would be correct mean?
Which measures of central tendency get affected if the extreme observations on both the ends of a data arranged in descending order are removed?
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?
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