For the heart rate, the T-test showed that there was no significant difference among the means of the blood pressure cuff and the Spree headband, as the p-value was greater than 0.05. The Pearson's R showed that there was a weak positive correlation between the variables. A T-test was used because there were only two sample groups being compared.
Temperature
T-Test: 2.16986E-64
Pearson's R: 0.1962487134
For the heart rate, the T-test showed that there was an extremely significant difference among the means of the thermometer and the Spree headband, as the p-value was much smaller than 0.05. The Pearson's R showed that there was very little correlation between the variables. A T-test was used because there were only two sample groups being compared.
Summary/Discussion
When analyzing the equipment used for the experiment, a few flaws were recorded. The most apparent flaw with the Spree technology was its inability to give a numerical statistic for the body temperature reading. Temperature was given in "levels" which was unhelpful when trying to analyze the difference between the thermometer and the Spree temperature readings. The second flaw recorded was with the Blood Pressure Cuff. The equipment had to be held in a very specific manner for it to record temperature and heart rate properly. Occasionally, there would be incorrect readings from the cuff because of the way it was held.
Recommendations for a future, improved spree product include: implementation of a temperature reading device that outputs body temperature in degrees Fahrenheit, using a fabric instead of the rubber/plastic material to improve comfort and the ability for the device to stay on the head, and implementing a way to collect sweat and preventing it from getting between the material.
LAB 3B WRITE-UP
==Target Population and Need==
Our product is an insole for shoes that acts as both a pedometer and a pressure sensor for feet. Our target population would mainly be athletic runners, as this device would be helpful especially for gauging the pressure of their feet to identify whether they are running incorrectly.
Device Design
Inferential Statistics
Number of Steps: Gold Standard (HTC Vive):
Average: 183.9333333 steps
Standard Deviation: 127.6040005 steps
Standard Error: 42.35721111 steps
Count: 15
SmartSole
Average: 183.6666667 steps
Standard Deviation: 126.8259024 steps
Standard Error: 42.17463693 steps
Count: 15
Pressure (Ball): Gold Standard (Foot Plantar Measurement System):
Average: 389.5333333 kPa
Standard Deviation: 23.81436141 kPa
Standard Error: 3.103761159 kPa
Count: 15
SmartSole
Average: 389.7333333 kPa
Standard Deviation: 23.56591566 kPa
Standard Error: 2.738612788 kPa
Count: 15
Pressure (Heel): Gold Standard (Foot Plantar Measurement System):
Average: 396.8666667 kPa
Standard Deviation: 20.04589971 kPa
Standard Error: 2.19089023 kPa
Count: 15
SmartSole
Average: 397 kPa
Standard Deviation: 19.32799598 kPa
Standard Error: 3.834057903 kPa
Count: 15
Pressure (Outer Side): Gold Standard (Foot Plantar Measurement System):
BME 100 Fall 2015
