Estadistica

1.
N | X | Y | X2 | XY |
1 | 1 | 6 | 1 | 6 |
2 | 2 | 18 | 4 | 36 |
3 | 3 | 55 | 9 | 165 |
4 | 4 | 160 | 16 | 640 |
5 | 5 | 485 | 25 | 2425 |
6 | 6 | 1460 | 36 | 8760 |
∑ | 21 |2184 | 91 | 12032 |





X | Y | | | |
1 | 6 | -262,8571429 |392949,878 | 128164 |
2 | 18 | -12,11428571 | 141461,956 | 119716 |
3 | 55 | 238,6285714 | 15717,9951 | 95481 |
4 | 160 | 489,3714286 | 15717,9951 | 41616 |
5 | 485 | 740,1142857 | 141461,956| 14641 |
6 | 1460 | 990,8571429 | 392949,878 | 1201216 |




2.
N | X | Y | X2 | XY |
1 | 0 | 3,5 | 0 | 0 |
2 | 5 |4,3 | 25 | 21,5 |
3 | 10 | 5,2 | 100 | 52 |
4 | 15 | 6 | 225 | 90 |
5 | 20 | 6,8 | 400 | 136 |
6 | 25 | 7,5 | 625 | 187,5 |
7 | 30 | 8,2 | 900 | 246 |
8 | 35 | 9,1 | 1225 | 318,5 |
∑ | 140| 50,6 | 3500 | 1051,5 |





X | Y | | | |
0 | 3,5 | 3,55833333 |7,65444444 | 7,980625 |
5 | 4,3 | 4,34880952 | 3,9053288 | 4,100625 |
10 | 5,2 | 5,13928571 | 1,40591837 | 1,265625 |
15 | 6 | 5,9297619 | 0,15621315 | 0,105625 |
20 | 6,8 | 6,7202381 | 0,15621315| 0,225625 |
25 | 7,5 | 7,51071429 | 1,40591837 | 1,380625 |
30 | 8,2 | 8,30119048 | 3,9053288 | 3,515625 |
35 | 9,1 | 9,09166667 | 7,65444444 | 7,700625 |La bomba más conveniente será aquella que produzca 3850 r.p.m.

3.
| Limites | fk | Fi | hi | Hi | |
1 | L1 – L2 | ∆ | ∆ | ∆/90 | ∆/90 | (L2 + L1)/2 |2 | L2 – L3 | 2∆ | 3∆ | 2∆/90 | 3∆/90 | (L3 + L2)/2 |
3 | L3 – L4 | 3∆ | 6∆ | 3∆/90 | 6∆/90 | (L4 + L3)/2 |
4 | L4 – L5 | 4∆ | 10∆ | 4∆/90 | 10∆/90 | (L5 + L4)/2 |
5 | L5 – L6 | 5∆ | 15∆ |...