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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` =?
पर्याय
`(bar x + bar y) / 2`
`bar x + bary`
`(bar x + bar y)/n`
` (barx + bary)/(2n)`
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उत्तर
`bb((bar x + bar y) / 2)`
Explanation:
Z = `(nx + ny)/ (2n)`
= `[n ( bar x + bar y )] /( 2n)`
= `(bar x + bar y)/2`
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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?
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