100 people draw lots

( 1)∵20∶ 100= 1∶5,

∴ =2, = 14, =4

∴ 2 cadres above deputy division level, ordinary cadres 14, and 4 workers.

(2) Due to the small number of cadres and workers at or above the deputy division level, two people and four people can be decided by drawing lots respectively; For ordinary cadres, 14 people can be selected by random number table method.

(3) The figures of 2 people, 4 people and 14 people are combined to obtain a sample with a capacity of 20.

Stratified sampling.

( 1)∵20∶ 100= 1∶5,

∴ =2, = 14, =4

∴ 2 cadres above deputy division level, ordinary cadres 14, and 4 workers.

(2) Due to the small number of cadres and workers at or above the deputy division level, two people and four people can be decided by drawing lots respectively; For ordinary cadres, 14 people can be selected by random number table method.

(3) The figures of 2 people, 4 people and 14 people are combined to obtain a sample with a capacity of 20.