Question

Is anybody good at relative frequency?

Answer 1

An environmentalist records how workers at the local factory travel to work. The tally chart shows her results.

a. calculate the relative frequency of each method of transport.

b. The factory increases it's workforce from 40 to 120. How many might she now expect to travel by car?

Answer 2

What is the sum of all the frequencies ?

Answer 3

@scarlettthecamel ??

Answer 4

one sec lemme just get dat

Answer 5

40

Answer 6

Frequency of bike ?

Answer 7

5 oh do i just divide 40 by 5 and then divide 40 by 19 and so on

Answer 8

Divide 5 by 40 for relative frequency of bike. So it is 5/40 = 0.125
Do the same for others...

Answer 9

oh right ok

Answer 10

Ok i have done that, do i do 19/120 to get the answer for question b

Answer 11

What is the relative frequency of car ?

Answer 12

Expected car users will be relative frequency times total users i.e \[\frac{19}{40} \times120 = 57\]

Answer 13

okay thanks