Question

pls help i give brainliest​

Answer 1

Answer:

53

Step-by-step explanation:

Take the mean of each row in the accidents reported column so for example 0-4 would be 0+4/2 = 2

Then times it by the frequency which in this case is 15:

2 x 15 = 30

Do this for each rows and then add it all up:

30 + 28 + 120 + 34 = 212

Then divide it by number of row which in this case is 4:

212/4 = 53

Answer 2

Answer:

7.75 ( 7.8 to 1 dp)

Step-by-step explanation:

Mean = sum of frequency over total number of items ( in this case 4 items )

Hence Mean = 31/ 4

Mean = 7.75 ( 7.8 to 1dp)