CAFS 4100 EXAM 2

Question 1

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

Accepted Answer

longitudinal

Question 2

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

Accepted Answer

Paired-samples t-test

Question 3

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

Accepted Answer

Independent samples t-test

Question 4

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

Accepted Answer

Two-tailed test

Question 5

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

Accepted Answer

Statistically significant

Question 6

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

Accepted Answer

One-way ANOVA

Question 7

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

Accepted Answer

transform

Question 8

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

Accepted Answer

Paired-samples t-test

Question 9

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

Accepted Answer

case study

Question 10

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

Accepted Answer

cross-sectional

Question 11

Speed of a car in miles per hour

Accepted Answer

Ratio

Question 12

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

Accepted Answer

One-sample t-test

Question 13

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

Accepted Answer

Statistically significant

Question 14

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

Accepted Answer

Two-tailed test

Question 15

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

Accepted Answer

(sur1 + sur2 + sur3 + sur4)/4

Question 16

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

Accepted Answer

False

Question 17

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

Accepted Answer

Two-tailed test

Question 18

Selecting cases is vital in finding accurate information on subsamples.

Accepted Answer

True

Question 19

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

Accepted Answer

cross-sectional

Question 20

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

Accepted Answer

Paired-samples t-test

Question 21

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

Accepted Answer

Ordinal

Question 22

Which of the following is NOT true?

Accepted Answer

"Recode into Different Variable" deletes the original variable

Question 23

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

Accepted Answer

nominal

Question 24

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

Accepted Answer

longitudinal

Question 25

Your annual income in dollars

Accepted Answer

Ratio

Question 26

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

Accepted Answer

Statistically significant

Question 27

Temperature measured in Celsius

Accepted Answer

Interval

Question 28

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

Accepted Answer

One-sample t-test

Question 29

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

Accepted Answer

Not statistically significant

Question 30

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

Accepted Answer

One-way ANOVA

Question 31

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

Accepted Answer

Paired-samples t-test

Question 32

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

Accepted Answer

One-tailed test

Question 33

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

Accepted Answer

Not statistically significant

Question 34

A lower standard deviation would mean. . .

Accepted Answer

the results are more reliable or predictable

Question 35

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

Accepted Answer

Interval

Question 36

Recoding into the same variable will delete old data.

Accepted Answer

True

Question 37

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

Accepted Answer

nominal

Question 38

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

Accepted Answer

var1 + var2 + var3

Question 39

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

Accepted Answer

Independent samples t-test

Question 40

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

Accepted Answer

One-tailed test

Question 41

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

Accepted Answer

One-tailed test

Question 42

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

Accepted Answer

type

Question 43

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

Accepted Answer

Not statistically significant

Question 44

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

Accepted Answer

label

Question 45

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

Accepted Answer

Independent samples t-test

Question 46

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

Accepted Answer

One-tailed test

Question 47

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

Accepted Answer

Statistically significant

Question 48

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

Accepted Answer

Compute Variable

Question 49

Blood type (A, B, AB, O)

Accepted Answer

Nominal

Question 50

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

Accepted Answer

One-tailed test

Question 51

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

Accepted Answer

Interval

Question 52

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

Accepted Answer

ordinal

Question 53

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

Accepted Answer

case study

CAFS 4100 EXAM 2

Questions 53

CAFS 4100 EXAM 2

Questions 53