Question

# Use the following scenario to answer the next three questions: A researcher wants to examine whether...

 Use the following scenario to answer the next three questions: A researcher wants to examine whether there is a relationship between amount of time spent on electronic devices and attention span (measured in milliseconds). List the two variables and identify the scale of measurement for each. Grading note: total question = 3 pts (1 pt for listing both variables and 1 pt per each correct scale of measurement) Answer: Which specific statistical test is most appropriate? (2 pts) Answer:

Sol:

The two variables are:

(1)Amount of time pent on electronic devices

(2)Attention span

scale of measurement:

Amount of time pent on electronic devices is quantitative variable and its scale is

INTERVAL

Attention span is quantitative variable and its scale is

INTERVAL

Solution2:

Which specific statistical test is most appropriate? (

Regression is more appropriate to check whether there is a relationship between

Amount of time pent on electronic devices

and Attention span

Regression equation can be set up as

Attentionspan=a+b*Amount of time pent on electronic devices