Question

In a study of texting speed, 45 adults aged 18-22 were randomly chosen. Each person was asked to the following phrase exactly "Hi! What's up?" on a cell phone. The average time it took was 2.72 seconds. This was found to happen with about a 25% chance when compared to someone saying it takes less than 3 seconds to type. 1.) Identify the following: a. Population: 1. b. Sample: c. Unit/individual: d. Response variable: 2.) What type of variable is the response variable? And what is the level of measurement?

Answer 1

From the given data in the study of texting speed, we can identify the following

1)

a) population; is all the individuals belonging to the age group of 18-22 years

b) sample; is the selected 45 adults in the age group of 18-22 years

c) unit / individual: adults

d) Response: time taken to write "hi! what's up?"

2)

The response variable is

• A continuous - quantitative variable.

It is a continuous variable as it can take an infinite number of possible values.

The level of measurement is

• Measured by the ratio scale of measurement.

variables measured by the ratio scale of measurement have equal differences between scale values and equal quantitative meaning. They also have a true zero point

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