A Seasonal Index for a Monthly Series Is About to Be

question 10

Multiple Choice

A seasonal index for a monthly series is about to be calculated on the basis of three years' accumulation of data. The three previous July values were 110, 150, and 130. The average demand over all months during the three-year time period was 190. What is the approximate seasonal index for July?

• A) 0.487
• B) 0.684
• C) 1.462
• D) 2.053
• E) cannot be calculated with the information given

---

Definitions:

Movement

The action or process of changing position or place.

Geologists

Scientists who study the Earth, its materials, and the processes affecting it over time.

Natural Hazards

Phenomena that occur in nature like earthquakes, floods, and hurricanes, which can pose risks to human health, safety, and property.

Observation

The act of monitoring, recording, or noting phenomena using the senses or scientific instruments.