Salt+water+drops+Length

Salt water drop length

Average mass in grams of a drop of salt water solution made by a 10cm pipette


 * || Trial1 || Trial 2 || Trial 3 || Trial 4 || Trial 5 || Trial 6 || Median || Mode || Mean ||
 * 2g of salt || 0.03055 || 0.04065 || 0.0317 || 0.0361 || 0.03455 || 0.0331 || 0.0338 || None || 0.0345 ||
 * 4g of salt || 0.03855 || 0.04165 || 0.0393 || 0.036 || 0.036 || 0.028 || 0.0372 || 0.036 || 0.0365 ||
 * 8g of salt || 0.04095 || 0.04715 || 0.04985 || 0.068 || 0.036 || 0.037 || 0.04405 || None || 0.046 ||

Average mass in grams of a drop of salt water solution by a 8cm pipette
 * || Trial 1 || Trial 2 || Trial 3 || Trial 4 || Trial 5 || Trial 6 || Median || Mode || Mean ||
 * 2g of salt || 0.0427 || 0.04255 || 0.0433 || 0.031 || 0.0279 || 0.0364 || 0.0364 || None || 0.0373 ||
 * 4g of salt || 0.0348 || 0.0376 || 0.0366 || 0.031 || 0.027 || 0.026 || 0.0329 || None || 0.03216 ||
 * 8g of salt || 0.0443 || 0.0416 || 0.0494 || 0.04 || 0.037 || 0.036 || 0.0408 || None || 0.041416 ||

Average mass in grams of a drop of salt water solution made by a 6cm pipette


 * || Trial 1 || Trial 2 || Trial 3 || Trial 4 || Trial 5 || Trial 6 || Median || Mode || Mean ||
 * 2g of salt || 0.03205 || 0.03235 || 0.03265 || 0.03535 || 0.03155 || 0.0364 || 0.03235 || None || 0.033441 ||
 * 4g of salt || 0.0328 || 0.03335 || 0.034 || 0.035 || 0.035 || 0.036 || 0.034 || 0.035 || 0.0344 ||
 * 8g of salt || 0.03515 || 0.0336 || 0.03685 || 0.03535 || 0.035 || 0.03655 || 0.03525 || none || 0.035416 ||

==== We spent a few days testing the effect of manipulated variables on the size of a drop of solution. The drops were made using a pipette. The responding variable was the mass of a drop. Instead of measuring the mass of one drop, we measured the mass of twenty drops and divided that number by 20. Three manipulated variables were tested: the length of a pipette, the width of a pipette, and the density of a solution. ====

==== Summarize the class’s results. Study the tables above and write one paragraph discussing each manipulated variable. The first sentence of each paragraph will state your conclusion about the variable. For example: the variable had an effect on drop size or the variable did not have an effect on drop size. The next sentences will use numbers to make your point. You will pick several numbers from different experiments to support your answer. For example, you can list the means from several experiments to show that the drop size is actually similar. ====

==== If you meet all of these expectations, your grade on this assignment is 90. If you would like a higher grade, you must exceed these expectations. If you do not fully meet any of these expectations, your grade is 70 or below. ====