Question

For a class experiment, Hilda places different colored marbles in a bag. She pulls a marble at random from the bag, records its color, and then puts the marble back in the bag. She repeats this process 25 times. The overall results are shown in the table.

Result: Blue Red Yellow Orange
Frequency: 6 4 8 7


What is the relative frequency that Hilda pulled a red marble?

Enter your answer in the box.

Answer 1

→ Chapter : Probability ←
≡ We know that the frequency of each marbles:
⇔ Blue → 6
⇔ Red → 4
⇔ Yellow → 8
⇔ Orange → 7

≡ Solution:
⇒ ⁴/₂₅ × 100%
∴ 16%

Answer 2

The relative frequency of pulling out a red marble is 0.16

Explanation:

We are given the frequency table as follows,

Result Frequency

Blue 6

Red 4

Yellow 8

Orange 7

Since, Relative Frequency is the ratio of the number of occurrences of an event to the total number of occurrences.

Then, the relative frequency of pulling out a red marble =
`(4)/(25)` = 0.16

Thus, the relative frequency of pulling out a red marble is 0.16