Question

plz solve it by anyone of them

step deviation method.
direct method .
assumed mean method .​

Answer 1

Answer:

here is your answer

do let me know if any query

@AçR

Answer 2

Answer:

Step-by-step explanation:

fixi = 395 + 5p

fi = 20

mean = 20

By direct method ,

20 = fixi/fi

20 = 395 + 5p/20

20*20 = 395 + 5p

400 = 395+ 5p

400 - 395 = 5p

5 = 5p

5/5 = p

p = 1