# Observational error

Page 1 of 24 - About 235 Essays
• ## Pendulum Essay

the average being linear. This line is shown to cut through the period axis at 1.3593 seconds, as the gradient is so low, it is assumed that the period for all masses recorded was approximately 1.3593 seconds. The graph shows that as the mass of a pendulum ball increases, the period virtually isn’t affected. The table and graph both indicate low scatter between trials, this is seen on the graph as the different points for each increment of mass are close together. The line of best fit in the graph also indicated low scatter and high precision between increments as the average points are close to the line of best fit. As shown in the second graph comparing the linen of true value with the average line of best fit there is obvious systematic error in this experiment, the two lines are too far apart to suggest high accuracy in the results although both lines have a very low gradient showing that they share similar characteristics when the relationship between variable is…

Words: 1881 - Pages: 8
• ## 11a Lab Report

If you want to get 100x better precision, you need 10,000x the number of measurements. In addition, there might be systematic errors that might for example depend on the person carrying out the measurement (reaction time) etc. Let’s explore a much more precise way of measuring velocity – photogates. We use two photogates that are connected to the computer. They consist of a little light emitting diode and a photo detector. If the spaced between the light emitter and the detector is blocked, an…

Words: 2035 - Pages: 9
• ## Acetic Acid Lab Report

As it is required that you rely on the human eye to determine when the indicator displays the end-point of the titration. Repeating an experiment using alternate equipment is crucial in revealing the accuracy of the titration. Different equipment assists in eliminating almost all forms of systematic errors. However, time constraints often determine whether or not this can be achieved, and in this case, there was not enough time to repeat the process with new equipment. Repeating the experiment…

Words: 1290 - Pages: 6
• ## Bottle Rocket Experiment

therefore potentially resulting in an effect on the motion of the bottle and the height data recorded at an unknown level; as opposed to that in theoretical conditions. Moreover, incorrect initial scaling of length measurement on the data analysis soft-wear, could have resulted in incorrect heights being deemed to have been reached by the bottle rocket. The nature of the freeze frame data analyzation on Pasco also resulted in time recordings that had slight discrepancies of maximum 0.033 seconds…

Words: 1528 - Pages: 7
• ## Acceleration Of Gravity Experiment

graph with the gradient of 1 divided by the square root of the acceleration of gravity is used. The length of the pendulum rod is increased every 2cm from 17cm until it reaches 25cm (i.e. five values). Ten oscillations are measured for each length and divided by ten and this is repeated ten times for each length. An average period is found for each of these lengths along with their uncertainties using the equations (3) and (4). A graph needs to be plotted with the period of the y-axis and 2π√L…

Words: 3661 - Pages: 15
• ## Long Term Ecological Research Paper

precision of freshwater partial pressure of CO2 (pCO2) estimates. To better understand observational uncertainty in CO2 flux from inland waters, here we conduct an analysis of historical observations and take new field observations at the North Temperate Lake Long Term Ecological Research (NTL LTER) site to quantify random errors in freshwater carbon system. We further estimate errors contribution to the precision of pCO2 derived from multiple carbonate equilibria and identify other sources of…

Words: 900 - Pages: 4
• ## Volumetric Pipette Lab

For, example, final volume of the mean volume of 10ml of water is calculated to 10. ; Analysing the density vs temperature graph as temperature increase the density will decrease. In graph above show that when temperature is 160C our density is 0.998 in other hand temperature is 19.00C and density is 0.9972.Random errors in this particle are measuring the water on volumetric pipette. Random errors are minimized by taking more data and it can be reduced by averaging the data which we collect…

Words: 1320 - Pages: 5
• ## Aquasol Experimental Design: Weaknesses

the manual dilution of the Aquasol concentrations. This is because, if a random error were to occur, and the diluted Aquasol concentration does not result in the desired concentration, the validity, reliability, and precision of the results is majorly decreased. Whereas if the Aquasol concentrations were already previously diluted in a lab by professionals, or were bought in the correct concentrations, the reliability, validity, and precision of the results would have been have been…

Words: 1144 - Pages: 5
• ## Electrolyte Concentration Lab Report

the results when increasing electrolyte concentration. Evident in Graph 1, the results contained scatter, and consisted of an outlier in the sample in which the ratio of NaCl: deionised water was 10:30mL. The outlier and scatter may have been due to random errors, which caused the results to be unreliable. Due to this, the raw data does not support the hypothesis. Thus, a line of best fit was drawn in order to reduce the effect of random errors, and statistically remove the outliers, to give a…

Words: 2152 - Pages: 9