Download 3.4 Making Linear Measurements

IED REVIEW for UNIT 3 Test
Name ________________________ Per_____
3.1 Linear Measurement
1. Write the value (in mm) of each measurement for the letters below given the Metric scale. Be sure to estimate
to one unknown digit.
A _17 mm___
B __40.5 mm__
2. Write the value (in fractional inches) of each measurement for the letters below given the English ruler. Be
sure to estimate to one unknown unit. Then give a decimal approximation of that value to two decimal places.
Exact Value
Decimal Approx
D
C __13/32 in____
__0.40 in_________
D __1 – ¼ in_____
__1.25 in________
C
3.2 Unit Conversion
For #3-5 complete each problem showing all work. Round answers to two decimal places when necessary. Be
sure to use your formula sheet for correct conversions. Also be sure to include units on your answers.
3. 3.68 billion decigrams to megagrams
3. _368 Megagrams_
4. During his WWF prime, Hulk Hogan weighed 285 pounds,
How many decigrams is this?
4. _1 292 738.25 decigrams
5. 3' 5 14 " to mm
5. _1047.75 mm_
6. Last weekend the Cincinnati Bengals beat the Cleveland Browns at Paul Brown Stadium in Cincinnati.
It is 249 miles from Cincinnati to Cleveland
a. How many kilometers is this?
a._ 400.73 kilometers_
b. The Cleveland Browns returned home in a Charter Bus that averaged 62 mph. How long will it take
the bus to get to Cleveland? Express your answer first in hours to the nearest hundredth, then convert the
time to the nearest minute.
(Hint: do not write mph, write miles
hr )
b. (hours) _4.02 hrs___
(mins) __241 min___
c. The bus traveled an average of 62 mph; convert this to km/hr
c. __99.78 km/hr____
_________________________________________________________________________________________
3.4 Making Linear Measurements
9. Read the dial caliper below. (precision 0.0000)
10. ____3.1285 in____________
(Be sure precision 0.0000)
3.5 Applied Statistics
Make sure you can find the mean, median, mode and range.
10. Which type of Standard Deviation calculation would you use in the situations below?
a. Use the results of this Test Review from this period IED class to determine the spread of the actual
Unit 3 test for all IED Classes.
Sample Standard Deviation
b. Determine the spread of the Unit 3 test in this period IED class.
Population Standard Deviation
11. A pair of students used dial calipers and measured across the grain of 27 wood cubes.
They calculated the mean to be 0.748 inches and the Standard Deviation to be 0.014 inches
a. Is this a Population Standard Deviation or a Sample Standard Deviation?
Population Standard Deviation
Calculate the value for Pts A, B, C, and D on the normal distribution curve below
Mean = 0.748 in
B
A = _0.720 inches_____
C
B= __0.734 inches_____
/ 
C= __0.762 inches_____
A
D
 /  2
D=__0.776 inches_____