Demo(Application)

Which of the following is an ordinal variable?

• Gender (Male, Female, Other)

• . Marital Status (Single, Married, Divorced)

• Education Level (High School, Bachelor's, Master's, PhD)

• Eye Color (Blue, Green, Brown)

Which of the following is a binary variable?

• Age in years

• Employment status (Employed, Unemployed)

• • Income bracket (Low, Medium, High)

• • Number of children

In a study measuring the effect of sleep duration on academic performance, which is the dependent variable?

• Sleep duration

• Number of students

• Academic performance

• Class schedule

In a study investigating the impact of caffeine on reaction time, which of the following would most likely be a control variable?

• Caffeine dosage

• Reaction time

• Participant’s age

• Sleep hours

A researcher is studying the effect of type of diet (Keto, Mediterranean, Vegan) and smoking status (Smoker, Non-Smoker) on cholesterol level (measured in mg/dL).
What are the correct classifications for these variables?

• Type of Diet – Nominal; Smoking Status – Binary; Cholesterol Level – Dependent

• Type of Diet – Ordinal; Smoking Status – Nominal; Cholesterol Level – Independent

• Type of Diet – Nominal; Smoking Status – Binary; Cholesterol Level – Independent

• Type of Diet – Ordinal; Smoking Status – Ordinal; Cholesterol Level – Dependent