Psychology CC 5 Week 3 Exam2 Quiz

Psychology CC 5 Week 3  Exam2 Quiz | chatbot las positas  community college

Question 1

Imagine that a small company has decided that employees need extra training around racial sensitivity. Listed are the number of  hours each employee trained:

3, 9, 5, 1, 4, 17, 12, 9, 6

What is the range?  

Question 2

Imagine that a small company has decided that employees need extra training around racial sensitivity. Listed are the number of  hours each employee trained:

3, 9, 5, 1, 4, 17, 12, 9, 6

What is the variance? (Should be a whole number)

Question 3

Imagine that a small company has decided that employees need extra training around racial sensitivity. Listed are the number of  hours each employee trained:

3, 9, 5, 1, 4, 17, 12, 9, 6

What is the standard deviation? (Round to hundredths place)

Question 4

A researcher is interested in the number of hours lost at work due to employee illness (sick time).

Below is a small sample of the larger study:

16, 8, 10, 35, 27, 3, 4, 6, 7, 6, 4, 12, 42, 7, 21

What is the range?  

Question 5

A professor looks at the scores on the recent exam.

Here they are:

·         99

·         55

·         11

·         66

·         15

·         88

·         100

·         10

·         5

·         100

Question 6

A professor looks at the scores on the recent exam.

Here they are:

·         99

·         55

·         11

·         66

·         15

·         88

·         100

·         10

·         5

·         100

Question 7

A professor looks at the scores on the recent exam.

Here they are:

·         99

·         55

·         11

·         66

·         15

·         88

·         100

·         10

·         5

·         100

Question 8

A psychologist gives a depression questionnaire to her patients. She's concerned that there is a great deal of variability in responses. The maximum on the questionnaire is a score of 100.

Here are the scores:

·         77

·         41

·         20

·         90

·         55

·         87

·         62

·         32

·         35

·         34

Which of these statements is true?    

·         The standard deviation is 28.9  

·         The range is 70.  

·         The variance is 554.99  

·         The range is 420.  

·         The variance is 70.

Question 9

A psychologist gives a depression questionnaire to her patients. She's concerned that there is a great deal of variability in responses. The maximum on the questionnaire is a score of 100.  

Here are the scores:

·         77

·         41

·         20

·         90

·         55

·         87

·         62

·         32

·         35

·         34

Which of these statements is true?    

·         The standard deviation is about 23.55.  

·         The variance is 70. 

·         The mean is 55.6 

·         The IQR is 48.

Question 10

•             Let's say that a researcher is looking at two groups of students by exam scores (100 max).

•             Group 1 has a mean of 50 and variance of 225.

•             Group 2 has a mean of 50 and variance of 100.

Assume each group has equal numbers of students.

Which group PROBABLY has a bigger range?   

·         Group 1 

·         Group 2

Question 11

If you were to sample from random participants and surveyed only every 3rd person, that would be called ________________.    

·         stratified random sampling  

·         Joe Mama  

·         systematic random sampling  

·         quota sampling  

·         convenience sampling

Question 12

The more participants you have in your sample, the ______ it looks like the population.    

·         naw 

·         trickier 

·         more 

·         less  

·         yaas

Question 13

Flipping two coins over and over again ___________ times would make the frequency distribution look like a normal curve.    

·         1,000 

·         80,000  

·         500  

·         100,000

Question 14

Based on IQ scores (s = 15, Mean = 100), the Z score for a person with a raw score of 115 would be _____________.   

·         0 

·         -2.0  

·         -3.0  

·         -1.0  

·         +3.0  

·         +1.0  

·         -1.5  

·         +2.0  

·         +1.5

Question 15

Getting a 2 or 6 on a six-sided die on a single roll has a ______% of happening (round to hundredths)