Question

Calculate X for the following data by direci, short cut and step deviation methods.
70
65
55
75
80
85
65
70
95​

Answer 1

Answer:

70-5=65

65-10=55

55+20=75

75+5=80

80+5=85

85-20=65

65+5=70

70+25=95

95-15=80