Macmillan Learning The length of a pencil is measured with two rulers. Report the length of the pencil from each ruler with the proper number of digits. 0 dm Ruler A Ruler A: Enter numeric value Ruler B: 0 dm Ruler B dm dm

The accepted value of the melting point of pureaspirin is 135 C. Trying to verify that value, you obtain 134 C, 136C133 C, and 138 C infour separate trials. Your partner finds 138 C,137 C, 138 C, and 138 C. (a) Calculate the average value and percent error for your data and your partner's data. (b) Which of you is more precise? More accurate?

The density of an irregularly shaped object was determined as follows. The mass of the object was found to be 28.90 g 0.03 g. A graduated cylinder was partially filled with water. The reading of the level of the water was 6.4 cm3 0.1 cm3. The object was dropped in the cylinder, and the level of the water rose to 9.8 cm3 0.1 cm3. What is the density of the object with appropriate error limits? (See Appendix 1.5.)

2. Students measured and recorded the mass of a rock four times. The true mass of the rock is known to be 3.25 grams. Complete the table and determine the average (mean), the deviations from the mean, the deviations squared, the standard deviation, and percent error. Trial # Mass (g) Deviation Deviation squared 3.22 2 3.21 3. 3.20 4 3.21 Standard Deviation Average (mean) Absolute Error Percent Error