CAFS 4100 EXAM 2

The interval level of measurement indicates that zero represents the absence of value.

A researcher compares stress levels between people who commute by car and those who commute by train.

A therapist documents a client’s journey with PTSD following a traumatic incident, emphasizing recovery patterns.

A study reports: t(28) = 2.14, p = 0.04 — Did the treatment have a significant effect?

Customer satisfaction survey rated from 1 (Very Dissatisfied) to 5 (Very Satisfied)

A researcher surveyed people aged 18–65 in one day to examine the relationship between age and music preferences.

I need to find the mean of four surveys. What formula would I use?

A correlation between stress and sleep: r = –0.45, p = 0.001 — Is this relationship significant?

A psychologist measures patients' stress levels before and after an 8-week mindfulness program.

A researcher finds: p = 0.08 when testing if caffeine affects memory.

A gym owner wants to compare the bench press strength of male and female members.

Time of day on a 12-hour clock (e.g., 3:00 PM)

A researcher hypothesizes that people who meditate have different stress levels than those who don’t.

In Variable View, which option allows you to specify whether a variable is numeric, string, or date?

Which measurement level should be selected for categorical variables like "Gender" (e.g., 0 = Male, 1 = Female)?

A university wants to know if students sleep less than 7 hours per night on average.

A school counselor assesses how students' anxiety levels have shifted from the beginning to the end of the semester.

The score on a standardized test (e.g., SAT score)

A developmental psychologist observes the same set of twins every month to analyze how parenting style affects growth.

Words like rating, level, and ranking usually tell us it is ____ type of measure.

Which of the following is NOT true?

Which function in SPSS allows you to create a new variable based on a mathematical formula?

Blood type (A, B, AB, O)

A therapist surveys 1,000 students at the same time to explore the relationship between happiness and sadness.

Temperature measured in Celsius

A company wants to prove that its new website loads faster than the old one.

Recoding into the same variable will delete old data.

A dietitian is testing if the average daily calorie intake is not equal to 2,000 calories.

A researcher wants to know if athletes perform better in the 100-meter sprint before or after a new training method.

A coffee company assesses if its new blend's caffeine differs from the average 100 mg in other brands.

A clothing brand wants to prove their jeans shrink less than 5% after washing.

A lower standard deviation would mean. . .

A beverage company wants to test if their new energy drink increases reaction time.

Selecting cases is vital in finding accurate information on subsamples.

Your annual income in dollars

Words like classifying, organizing, and categorizing usually tell us it is ____ type of measure.

Which column in Variable View is used to assign a short, descriptive name to each variable?

A retail store wants to compare average monthly sales across four locations.

Researchers tracked the same group of people from their 20s to their 60s to study how personality changes over time.

A manufacturer wants to prove that their lightbulbs last longer than 1,000 hours.

An independent samples t-test yields p = 0.051 — Is this considered statistically significant?

A city planner studies whether commute times differ after implementing a new traffic pattern.

A paired-samples t-test result: t(12) = 1.63, p = 0.12 — Did scores change significantly?

A professor compares exam scores between students who attended a review session and those who did not.

A school district compares reading scores among students in 1st, 3rd, and 5th grades.

Speed of a car in miles per hour

A dietitian tracks cholesterol levels of patients before and after a 6-month low-fat diet.

A teacher wants to know if her class scored differently on a test compared to the national average score of 80.

An ANOVA reports F(2, 47) = 4.33, p = 0.019 — Did group differences exist?

Which SPSS menu contains the "Recode" and "Compute Variable" options?

I need to find the sum of three variables. Which formula would I use?

A study comparing two teaching methods shows: p = 0.049 — Is there a significant difference?

A scientist documents in detail the life and behavior of a single chimpanzee living in a nature reserve.