Exam 1 written question practice

Question 1

Decide whether the situaton uses categorical, ordinal, ratio, or interval variables

1. Measuring the temperature of water in degrees F.

Answer 1

Interval

Question 2

Decide whether the situaton uses categorical, ordinal, ratio, or interval variables

2. Measuring dress size.

Answer 2

Interval (0-5)
Ordinal (1-2) (3-4)(4-5)

Question 3

Decide whether the situaton uses categorical, ordinal, ratio, or interval variables

3. Measuring the amount of weight gained or lost from an experimental drug.

Answer 3

Ratio

Question 4

Decide whether the situaton uses categorical, ordinal, ratio, or interval variables

4. Recording the hair color of each person in the class.

Answer 4

Categorical

Question 5

Decide whether the situaton uses categorical, ordinal, ratio, or interval variables

5. Recording the sex of each person in the class.

Answer 5

categorical

Question 6

Decide whether the situaton uses categorical, ordinal, ratio, or interval variables

6. Recording the SES of 200 residents in Edmond by grouping them into income groups (in thousands) 0-20, 21-40, 41-60, 61-80, 80-100, 100+.

Answer 6

Ordinal

Question 7

Decide whether the situaton uses categorical, ordinal, ratio, or interval variables

7. Recording the SES of 200 residents in Edmond by asking them their exact salaries in dollars.

Answer 7

Ratio

Question 8

Decide whether the situaton uses categorical, ordinal, ratio, or interval variables

8. Recording the grade each person gets in the class by exact overall percentage.

Answer 8

Interval

Question 9

Decide whether the situaton uses categorical, ordinal, ratio, or interval variables

9. Recording the grade each person gets in the class by letter grade.

Answer 9

ordinal

Question 10

A: # of Variables
B: Variables
C: Claim? Frequency, Association, or Cause

Preschoolers who skip naps are worse at a memory game than those who snooze.

Answer 10

Preschoolers who skip naps are worse at a memory game than those who snooze.

A: 2 variables
B: naps, performance of memory game
C: Association Claim

Question 11

A: # of Variables
B: Variables
C: Claim? Frequency, Association, or Cause

…a single night of sleep deprivation boosts brain levels of the proteins that form toxic clumps in Alzheimer’s patients.

Answer 11

…a single night of sleep deprivation boosts brain levels of the proteins that form toxic clumps in Alzheimer’s patients.

A: 2 variables
B: sleep deprivation, brain levels
C: Causal claim

Question 12

A: # of Variables
B: Variables
C: Claim? Frequency, Association, or Cause

In 2016, the Centers for Disease Control and Prevention reported that a third of adults fail to get the recommended seven hours.

Answer 12

In 2016, the Centers for Disease Control and Prevention reported that a third of adults fail to get the recommended seven hours.

A: 1 variable
B: recommended seven hours\
C: Frequency claim

Question 13

A: # of Variables
B: Variables
C: Claim? Frequency, Association, or Cause

…even modest sleep reductions are linked to increased feelings of social isolation and loneliness.

Answer 13

…even modest sleep reductions are linked to increased feelings of social isolation and loneliness.

A: 3 variables
B: sleep reduction, social isolation, loneliness
C: Association claim

Question 14

A: # of Variables
B: Variables
C: Claim? Frequency, Association, or Cause

A small study presented at the Society for Neuroscience conference last year found early evidence that playing “pink” noise — similar to white noise but with different frequencies — in a specific pattern could increase the proportion of time people spent in restorative deep sleep.

Answer 14

A small study presented at the Society for Neuroscience conference last year found early evidence that playing “pink” noise — similar to white noise but with different frequencies — in a specific pattern could increase the proportion of time people spent in restorative deep sleep.

A: 2 variables
B: Pink/White noise, proportion of time people spent in restorative deep sleep
C: causal claim

Question 15

A: # of Variables
B: Variables
C: Claim? Frequency, Association, or Cause

Adults over 50 with lots of insomnia symptoms were more likely to fall than those without, according to one study.

Answer 15

Adults over 50 with lots of insomnia symptoms were more likely to fall than those without, according to one study.

A: 2 variables
B: Insomnia symptoms, likeliness of falling
C: Association claim

Question 16

A: # of Variables
B: Variables
C: Claim? Frequency, Association, or Cause

Studies have linked pain to poor sleep..

Answer 16

Studies have linked pain to poor sleep..

A: 2 variables
B: Pain, poor sleep
C: Association claim