Magnification= X16, 000
Average width of magnified cell wall= 3mm
Actual width of cell = size of object/ magnification
=3mm/16, 000
=0.0001875mm
=0.1875µm
=187.5nm
≈188nm
EVALUATION
The standard deviation is very low showing that the values recorded are very close to the mean (clustered to the mean). The range is not big, thus showing no outliers are found. Therefore the data collected can be said to be reliable. The value obtained could have been more accurate if more recordings were taken.
Question 2: Electron micrograph 2
- Diameter of the nucleolus
RAW DATA COLLECTED
Magnification= X25, 000
PROCESSING DATA
Mean of records= (76mm+77m+77mm+77mm+76mm)/5
=383mm/5
=76.6mm
≈77mm
Standard Deviation=0.55
Range=77mm-76mm
=1mm
Calculating actual width of cell wall:
Magnification= size of drawing/ size of object
Magnification= X25, 000
Average width of magnified cell wall= 77mm
Actual width of cell = size of object/ magnification
=77mm/25, 000
=0.00308mm
=3.08µm
≈3.µm
EVALUATION
The values recorded were very consistent, thus the range was not too large. The standard deviation was found to be very small, meaning values were found very close to the mean. They are not widely spread. The data collected could be said to be reliable. Taking measurements with more precise equipments would result into better recording of values therefore more accurate when doing calculation.
- Length of nucleus
RAW DATA COLLECTED
Magnification= X25, 000
Record: 207mm
Note: only 1 record taken because all values result as the one above.
Calculating actual length of nucleus:
Magnification= size of drawing/ size of object
Magnification= X25, 000
Average width of magnified cell wall= 207mm
Actual width of cell = size of object/ magnification
=207mm/25, 000
=0.00828mm
=8.28µm
≈8µm
EVALUATION
Mean, standard deviation and range could not be found as only 1 value was considered. With better equipments, the values could have been recorded with more precision.
- Width of nuclear envelope
RAW DATA COLLECTED
Magnification= X25, 000
