Random error

incorrect sample range of the launch angles, creating data that that only showcased a small part of an overall trend. This resulted in accurate data and the quadratic equations expressing the data, thus misrepresenting the trends. Experimental Errors: Random Errors (ordered from most impactful to least impactful): 1. Angle of projection being altered when firing the projectile. To launch the projectile, the string attached to the trigger was pulled. Sometimes, excess force

Random errors During this investigation individuals were asked to lift the weight and lower it down and repeat the cycle at their peak performance. There is a possibility that some individuals did not perform at their peak performance at all times. This could impact the number of cycles performed each time. Therefore, this error could affect the measurements and the correlation which was concluded from the data. However this error was inevitable, but to minimise its effect shortening the period of

Schwarzkopf hair dictionary, the normal average thickness of a European person hair is between 0.06-0.1mm (Hair Dictionary: Important Facts about Hair, 2017). This means that the diameter of 0.085 lies comfortably in range. A number of random and systematic errors have affected the experiment. According to the relationship of, △y=Lmd The linear graphs formed should

Introduction: All living organisms require the ability to regulate the water transported into and out of a cell. This is process is called Osmosis, which is the movement of water from a region of higher water concentration to a region of lower water concentration through a selective preamble membrane. Osmosis is a type of passive transport; therefore, no energy is required for this change to occur. (Lodish, H, Arnold, B, Zipursky, S, Matsudaira, P & Baltimore, D, 2000) Independent variable: •

and then the time for the reaction are close together then the results are precise. But if the temperatures aren’t close together but then the times are close then that means the results aren’t precise or either then that means there would be a random error

A systematic error is a constant inaccuracy that is present throughout the whole experiment, therefore affecting all of the data. It is often difficult to minimise the effects of systematic errors as they are complicated to detect and cannot be analysed statistically because all inaccuracies have been affected in the same direction. On the other hand, random errors tend to rely on the inabilities of the experimenter, and his/her limitations

The hypothesis tested was “as the concentration of the sodium chloride solution increases, the change in mass of the potato cylinders will decrease, from gaining to losing mass, allowing the isotonic point of the potato cells to be found” which was supported by both the group and class results. These results showed that increasing the sodium chloride solution concentration allowed it to approach the isotonic point and then surpass it when the solution became hypertonic and the net movement of water

Aim: To determine the effect temperature and cooling rate has on crystal growth from potash solution Hypothesis: The crystal solution cooling the slowest will have the biggest crystals as the ions have time to align themselves and grow whereas solutions cooling quickly will have smaller crystals as the crystals all clump together and don’t have time to properly form. Materials: • 3 x Beakers 50ml • 1 x 1m Cooking Twine • 1 x Measuring Cylinder • 1 x Heat Mat • 1 x fridge • 1 x Centimetre Ruler

Finding the Activation Energy of the reaction between Hydrochloric Acid and Sodium Thiosulfate The equation for the reaction is: S2O32- (aq) + 2H+(aq) ⋄ SO2 (g) + S(s) + H2O (l) Equipment - 2 boiling tubes - 400 cm3 beakers - Marker pen - Stand and clamp - Timer - Bunsen burner, tripod and gauze - 0 – 100 oC thermometer - 2 x 10 cm3 measuring cylinders - Access to a fume cupboard. Method 1. Label two boiling tubes A and B. Mark a dark spot on the side of a 400cm3 beaker, then ½ fill

word errors per minute. To operationalize health symptoms, a questionnaire was administered to measure how many work-related health symptoms they had experienced since the last assessment. Extraneous variables are important to control because they provide another explanation for the dependent variable changing that is not due to the independent variable. Extraneous variables take two forms; Systematic Error and Random Error (Ghilani, 2010). In the present trial, a number of systematic errors have