What is the area of the room?
25 points
Name:__________________________ Date:____________ Period:______
Write your determination of the area of the room, in square meters, right here:__________
Description: Each pair of students measure the area of the classroom, using meter sticks. Data is pooled and the mean and standard
deviation is calculated. Finally, percent error is calculated.
Materials:
| meter sticks |
| student volunteers |
| A | B | C | D | |
| Group | Area (m) | Mean area (m) | A-B | C2 |
| 1 | ||||
| 2 | ||||
| 3 | ||||
| 4 | ||||
| 5 | ||||
| 6 | ||||
| Total | -------- | -------- | ||
| Mean | -------- | -------- | -------- |
Calculate the standard deviation:
standard deviation (sd) =
x = mean xn = a particular value of a measurement d = xi - xn= deviation
N = the number of measurements (N=5 in this case)
What is the actual area:______________
Compute the percent error between your calculation and the actual value. Write the formula below and complete the calculation.
Compute the percent error between the class mean and the actual value.
Were you more or less accurate than the class mean?
If carpet costs $12/m2, how much would it cost to carpet this room?
We discussed a number of ways to measure the area of this room. Which do you think is most accurate and why?