Question

Calculate standard deviation from the following table :
Class interval

Frequency


20–29 8

30–39 10

40–49 25

50–59 31

60–69 11

70–79 12

80–89 2

90–99 1

N = 100​

Answer 1

Answer:

bro it's very easy

Step-by-step explanation:

refer to textbook and do it it isn't hard hope u do it