Back to School Offer

Get 20% of Your First Order amount back in Reward Credits!

Get 20% of Your First Orderback in Rewards

All papers examples
Get a Free E-Book! ($50 Value)
HIRE A WRITER!
Paper Types
Disciplines
Get a Free E-Book! ($50 Value)

Do Older People Have Slower Reaction Times, Lab Report Example

Pages: 2

Words: 483

Lab Report

This experiment was set up to test the reaction times of older people against their younger counterparts. The set up was simple, having each participant answer five mathematical subtraction problems while being timed. The problems were presented on individual flash cards. Each time for the five questions was then logged. There were sixty participants overall and they were divided into two categories based on age. Those categories were over twenty-five and under twenty-five years old. For this experiment, the independent variable was age and the dependent variable was the time it took them to complete the problems. The control was the group that was under twenty-five as the experiment was on the effects of aging on reaction time. This means the under twenty-five group was tested just to provide a basis for comparison.

Mean 7.71
Standard Error 0.36104414
Median 7.2
Mode 7.2
Standard Deviation 1.97752022
Sample Variance 3.91058621
Kurtosis 1.01956176
Skewness 1.23702753
Range 7.3
Minimum 5.2
Maximum 12.5
Sum 231.3
Count 30
Confidence Level(95.0%) 0.73841817

 

Mean 8.52
Standard Error 0.975403
Median 7.5
Mode 6.4
Standard Deviation 5.342504
Sample Variance 28.54234
Kurtosis 25.9458
Skewness 4.952013
Range 30.3
Minimum 5.6
Maximum 35.9
Sum 255.6
Count 30
Confidence Level(95.0%) 1.994924

The top table is those who are under twenty five, while the bottom is the experimental group, those that were over twenty five. The mean is higher in the over twenty five group, but there must be some work done to test for the significance of that difference. The probability of an 8.52 score for the first group can be calculated through its z score of 2.24. The p value for that z score is .0125, meaning the chance of a member of the control group reaching the mean of the experimental group is 1.25%. However, the odds of a member of the experimental group reaching the control group mean are much better, as the standard error amongst the older group is much larger. Running the same calculation gives a value of 20.32% for that feat.

While this experiment seems to show that older people have delayed reaction speeds, it may just be the case that one outlier is affecting the numbers significantly. A member of the experimental group took over thirty-five seconds to complete the exercise, and without this score that group’s mean falls to 7.58, actually lower than the mean for the entire control group. If the outliers were removed for both groups, the result would be a negligible difference between the means. For this reason, the experiment is inconclusive and will need more studying to figure out. A large sample size and more divisions between ages would be good ways to improve it in the future. In fact, an experiment in which specific age and reaction speed were both recorded would allow for more detailed analysis and regression to be undertaken, improving the knowledge that could be gained from the experiment.

Time is precious

Time is precious

don’t waste it!

Get instant essay
writing help!
Get instant essay writing help!
Plagiarism-free guarantee

Plagiarism-free
guarantee

Privacy guarantee

Privacy
guarantee

Secure checkout

Secure
checkout

Money back guarantee

Money back
guarantee

Related Lab Report Samples & Examples

The Molar Volume of Oxygen, Lab Report Example

When maintained at standard temperature and pressure, an ideal gas’s volume is the most typical illustration of the molar volume (273 K and 1.00 atm). [...]

Pages: 1

Words: 360

Lab Report

Use of Gel Electrophoresis, Lab Report Example

Introduction Gel electrophoresis is used to separate DNA on the basis of its size. Due to the differential charge between the negative end of the [...]

Pages: 2

Words: 634

Lab Report

Effect of Heat Stress on Beetroot and Pea Plant Cell Membranes, Lab Report Example

Introduction Both the pea plant and the beetroot are exposed to environmental changes that have the ability to alter their cellular components.  The cell membranes [...]

Pages: 8

Words: 2209

Lab Report

Forensic Trace Analysis Laboratory, Lab Report Example

Circumstances of the Case The purpose of the present analysis is to examine the relationship between the actions of Ken Long, a male suspect aged [...]

Pages: 8

Words: 2107

Lab Report

Thin Layer and Column Chromatography, Lab Report Example

Objective The goal of the experiment was the evaluation of organic pigments by means of the application of column chromatography in addition to a collection [...]

Pages: 4

Words: 1111

Lab Report

Density and Archimedes Principle, Lab Report Example

Introduction The principle introduced by Archimedes delineates that for bodies that are proportionally or comprehensively submerged in a liquid, there is an equal and opposite [...]

Pages: 3

Words: 753

Lab Report

The Molar Volume of Oxygen, Lab Report Example

When maintained at standard temperature and pressure, an ideal gas’s volume is the most typical illustration of the molar volume (273 K and 1.00 atm). [...]

Pages: 1

Words: 360

Lab Report

Use of Gel Electrophoresis, Lab Report Example

Introduction Gel electrophoresis is used to separate DNA on the basis of its size. Due to the differential charge between the negative end of the [...]

Pages: 2

Words: 634

Lab Report

Effect of Heat Stress on Beetroot and Pea Plant Cell Membranes, Lab Report Example

Introduction Both the pea plant and the beetroot are exposed to environmental changes that have the ability to alter their cellular components.  The cell membranes [...]

Pages: 8

Words: 2209

Lab Report

Forensic Trace Analysis Laboratory, Lab Report Example

Circumstances of the Case The purpose of the present analysis is to examine the relationship between the actions of Ken Long, a male suspect aged [...]

Pages: 8

Words: 2107

Lab Report

Thin Layer and Column Chromatography, Lab Report Example

Objective The goal of the experiment was the evaluation of organic pigments by means of the application of column chromatography in addition to a collection [...]

Pages: 4

Words: 1111

Lab Report

Density and Archimedes Principle, Lab Report Example

Introduction The principle introduced by Archimedes delineates that for bodies that are proportionally or comprehensively submerged in a liquid, there is an equal and opposite [...]

Pages: 3

Words: 753

Lab Report

Get a Free E-Book ($50 in value)

Get a Free E-Book

How To Write The Best Essay Ever!

How To Write The Best Essay Ever!