What is the meaning of Expected_value?

5-letter words containing

• 5-letter words containing d

• 5-letter words containing n

• 5-letter words containing e

• 5-letter words containing a

• 5-letter words containing h

5-letter words starting with

• 5-letter words starting with i

• 5-letter words starting with y

• 5-letter words starting with e

• 5-letter words starting with d

• 5-letter words starting with e

5-letter words in the middle

• 5-letter words in the middle e

• 5-letter words in the middle d

• 5-letter words in the middle n

• 5-letter words in the middle r

• 5-letter words in the middle f

5-letter words ending with

• 5-letter words ending with c

• 5-letter words ending with m

• 5-letter words ending with g

• 5-letter words ending with f

• 5-letter words ending with a

5-letter words excluding

• 5-letter words excluding l

• 5-letter words excluding o

• 5-letter words excluding z

• 5-letter words excluding t

• 5-letter words excluding n