## Disease Detectives B/C

UTF-8 U+6211 U+662F
Exalted Member
Posts: 1453
Joined: January 18th, 2015, 7:42 am
Division: C
State: PA

### Re: Disease Detectives B/C

IcsTam wrote:Given a 2x2 table, how would you calculate the standard deviation? (qualitative explanation, although if using numbers as an example would help you, then feel free to)

Standard deviation of what? A 2x2 table measures categorical data.

(If you mean the sampling distribution of proportions, you can calculate the std dev. of the sampling distribution with $\sqrt{\frac{p(1-p)}{n}}$ or $\sqrt{\frac{\hat{p}(1-\hat{p})}{n}}$ if a proportion is not given.)

IcsTam
Member
Posts: 58
Joined: March 1st, 2017, 5:09 pm
Division: C
State: PA

### Re: Disease Detectives B/C

UTF-8 U+6211 U+662F wrote:
IcsTam wrote:Given a 2x2 table, how would you calculate the standard deviation? (qualitative explanation, although if using numbers as an example would help you, then feel free to)

Standard deviation of what? A 2x2 table measures categorical data.

(If you mean the sampling distribution of proportions, you can calculate the std dev. of the sampling distribution with $\sqrt{\frac{p(1-p)}{n}}$ or $\sqrt{\frac{\hat{p}(1-\hat{p})}{n}}$ if a proportion is not given.)

Oh shoot, I messed up the question, my bad. That's pretty much what I meant. Go for it
Penncrest ‘18
UPenn ‘22
PM me about UPenn, Physics, or anything college or SciOly related!

UTF-8 U+6211 U+662F
Exalted Member
Posts: 1453
Joined: January 18th, 2015, 7:42 am
Division: C
State: PA

### Re: Disease Detectives B/C

What are the different types of carriers?

Tailsfan101
Exalted Member
Posts: 613
Joined: April 14th, 2017, 4:33 pm
Division: C
State: ID
Location: Philippians 3:20a "For our citizenship is in heaven"
Contact:

### Re: Disease Detectives B/C

UTF-8 U+6211 U+662F wrote:What are the different types of carriers?

I think
2019 Treasure Valley Homeschool Wiki
2017

2018

2019

Assassinator for game #118

UTF-8 U+6211 U+662F
Exalted Member
Posts: 1453
Joined: January 18th, 2015, 7:42 am
Division: C
State: PA

### Re: Disease Detectives B/C

Tailsfan101 wrote:
UTF-8 U+6211 U+662F wrote:What are the different types of carriers?

I think

Tailsfan101
Exalted Member
Posts: 613
Joined: April 14th, 2017, 4:33 pm
Division: C
State: ID
Location: Philippians 3:20a "For our citizenship is in heaven"
Contact:

### Re: Disease Detectives B/C

Question 1

Question 2

Easy questions.
2019 Treasure Valley Homeschool Wiki
2017

2018

2019

Assassinator for game #118

Killboe
Member
Posts: 191
Joined: January 29th, 2018, 7:04 am
Division: B
State: FL

### Re: Disease Detectives B/C

Tailsfan101 wrote:
Question 1

Question 2

Easy questions.

I'm going to do Question 1 and 2.

Proud competitor of B-01 MS

2019 Events

Disease Detectives
Solar System
Thermodynamics

My Wiki

Tailsfan101
Exalted Member
Posts: 613
Joined: April 14th, 2017, 4:33 pm
Division: C
State: ID
Location: Philippians 3:20a "For our citizenship is in heaven"
Contact:

### Re: Disease Detectives B/C

Killboe wrote:
Tailsfan101 wrote:
Question 1

Question 2

Easy questions.

I'm going to do Question 1 and 2.

2019 Treasure Valley Homeschool Wiki
2017

2018

2019

Assassinator for game #118

UTF-8 U+6211 U+662F
Exalted Member
Posts: 1453
Joined: January 18th, 2015, 7:42 am
Division: C
State: PA

### Re: Disease Detectives B/C

Tailsfan101 wrote:
Killboe wrote:
Tailsfan101 wrote:
Question 2

The problem with asking this question is that both answers are right (and that all the "steps" could easily be broken down into multiple steps).

Of course, Killboe's answer leaves out actually testing the hypotheses

Killboe
Member
Posts: 191
Joined: January 29th, 2018, 7:04 am
Division: B
State: FL

### Re: Disease Detectives B/C

Question 1

Question 2
Proud competitor of B-01 MS

2019 Events

Disease Detectives
Solar System
Thermodynamics

My Wiki

UTF-8 U+6211 U+662F
Exalted Member
Posts: 1453
Joined: January 18th, 2015, 7:42 am
Division: C
State: PA

### Re: Disease Detectives B/C

Killboe wrote:
Question 1

Question 2

Killboe
Member
Posts: 191
Joined: January 29th, 2018, 7:04 am
Division: B
State: FL

### Re: Disease Detectives B/C

UTF-8 U+6211 U+662F wrote:
Killboe wrote:
Question 1

Question 2

Proud competitor of B-01 MS

2019 Events

Disease Detectives
Solar System
Thermodynamics

My Wiki

UTF-8 U+6211 U+662F
Exalted Member
Posts: 1453
Joined: January 18th, 2015, 7:42 am
Division: C
State: PA

### Re: Disease Detectives B/C

Why might you stratify a table of case-related mortalities by age?

Froggie
Member
Posts: 296
Joined: June 19th, 2017, 2:12 pm
Division: B
State: PA
Location: See above.

### Re: Disease Detectives B/C

UTF-8 U+6211 U+662F wrote:Why might you stratify a table of case-related mortalities by age?

So that you can see whether the case affects older/younger/middle aged people, and that data can help you prevent further deaths.
"A lot of people have quotes in their signature. Maybe I should have a quote in my signature. "
- Froggie

UTF-8 U+6211 U+662F
Exalted Member
Posts: 1453
Joined: January 18th, 2015, 7:42 am
Division: C
State: PA

### Re: Disease Detectives B/C

Froggie wrote:
UTF-8 U+6211 U+662F wrote:Why might you stratify a table of case-related mortalities by age?

So that you can see whether the case affects older/younger/middle aged people, and that data can help you prevent further deaths.

Ehh, a better reason is that