Question

question 8: a spinner lands of white, black, red or orange. the relative frequencies after 300 spins are shown in the table below. (a) how many times did the spinner land on white? (b) how many times did the spinner land on red? (c) how many more times did the spinner land on black than orange?
colour | white | black | red | orange
relative frequency | 0.25 | 0.4 | 0.2 | 0.15

Explanation:

Step1: Calculate white - land times

$0.25\times300 = 75$

Step2: Calculate red - land times

$0.2\times300=60$

Step3: Calculate difference between black and orange

$(0.4 - 0.15)\times300=0.25\times300 = 75$

Answer:

(a) 75
(b) 60
(c) 75