We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy

# The Breaking Force of Hair Lab Essay Sample

The whole doc is available only for registered users OPEN DOC
• Pages:
• Word count: 392
• Category: Force

## A limited time offer!

Get a custom sample essay written according to your requirements urgent 3h delivery guaranteed

Order Now

## The Breaking Force of Hair Lab Essay Sample

Data Processing and Presentation

Table #1: Mean and Standard Deviation of Blow Dried Hair and Non-Blow Dried Hair Data

Type of Hair

Mean (N ï¿½ 0.01 N)

Standard Deviation (N)

Non-Blow Dried Hair Force

2.08

ï¿½ 0.68

Blow Dried Hair Force

1.70

0.83

Note: Microsoft Excel 2007 was used to calculate mean and standard deviation.

Note: Error Bars represent standard deviation. Units and uncertainties are not applicable for the independent variable (type of hair).

Degrees of Freedom

Sum of Samples of Each of the Two Groups – 2

= 50 + 50 – 2

= 98

An approximate value of 100 was used as the degrees of freedom for use in the t-table.

Probability due to chance

Given the t value for the non-blow dried hair compared to the blow dried hair is 1.97, the t-table can be used to find the probability that the difference between the two groups is due to chance. The t value of 1.99 was used an approximate t value, since a 1.97 value in the 100 degrees of freedom rows does not exist. Therefore, the probability that the difference between the two groups is due to chance is 0.05 (5%).

Range

Non-Blow Dried Hair Force

Blow Dried Hair Force

Range = Largest value – Smallest Value

= 3.47 – 0.85

= 2.62

Range = Largest value – Smallest Value

= 3.88 – 0.03

= 2.85

Conclusion

The average hair breaking force of non-blow dried hair is 2.08 N 0.01 N, with a standard deviation of 0.68. The average hair breaking force of blow dried hair is 1.70 N 0.01 N, with a standard deviation of 0.83. The average of the hair breaking force of non-blow dried hair is greater than the hair breaking force of blow dried hair. This means that blow dried hair is weaker than non-blow dried hair. Since the standard deviation for the non-blow dried hair is less than the standard deviation of the blow dried hair, we are more confident of the accuracy of the non-blow dried hair data, and the blow dried hair data is more variable.

References:

“The Structure of Your Hair.” Salon Web. 1996. <http://www.salonweb.com/chem>

We can write a custom essay

Order an essay
300+
Materials Daily
100,000+ Subjects
2000+ Topics
Free Plagiarism
Checker
All Materials
are Cataloged Well

Sorry, but copying text is forbidden on this website. If you need this or any other sample, we can send it to you via email.

Sorry, but only registered users have full access

immediately?

Become a member

Thank You A Lot!

Emma Taylor

online

Hi there!
Would you like to get such a paper?
How about getting a customized one?

Can't find What you were Looking for?