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1 year ago

Ria surveyed 20 classmates to ask what types of pets they had at home. calculate the relative frequency of each pet type.

Mathematics

1 answer:

maksim [4K]1 year ago

4 0

The relative frequencies for all pets are given-

The relative frequency for dog is 0.4.

The relative frequency for cat is 0.35.

The relative frequency for bird is 0.15.

The relative frequency for fish is 0.1

<h3>What is relative frequency?</h3>

The ratio of the total number of events occurring in a scenario to the number of times an event occurs is known as relative frequency.

Relative Frequency = Subgroup frequency/ Total frequency.

Relative Frequency = f/ n.

where, f = total frequency

n = subgroup frequency

Calculation for the relative frequencies of the pet types:

(1) Relative frequency for dog:

Total frequency is 20.

The frequency for dog is 8.

Relative frequency for dog = frequency for dog/total frequency

= 8/20

= 0.4

Relative frequency for dog = 0.4.

(2) Relative frequency for cat:

Total frequency is 20.

The frequency for cat is 7.

Relative frequency for cat = frequency for cat/total frequency

= 7/20

= 0.35

Relative frequency for cat = 0.35.

(3) Relative frequency for bird:

Total frequency is 20.

The frequency for bird is 3.

Relative frequency for bird = frequency for bird/total frequency

= 3/20

Relative frequency for bird = 0.15.

(4) Relative frequency for fish:

Total frequency is 20.

The frequency for fish is 2.

Relative frequency for fish = frequency for fish/total frequency

= 2/20

Relative frequency for fish = 0.1.

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The expression is given as:

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