Graphing data Knowledge-Based Download PDF

Questions

1. 1.

   In a scientific investigation, what is the primary purpose of drawing a line of best fit through experimental data points rather than connecting the points sequentially?

   • A) To ensure that the plotted line passes through every recorded data point
   • B) To directly measure the absolute instrumental error of the measuring devices
   • C) To force the experimental relationship to intersect the origin of the graph
   • D) To show the overall trend while averaging out random experimental uncertainties
2. 2.

   When graphing experimental data in a scientific investigation, how are the independent and dependent variables conventionally assigned to the axes?

   • A) The independent variable is plotted on the horizontal axis (x-axis), and the dependent variable is plotted on the vertical axis (y-axis).
   • B) The dependent variable is plotted on the horizontal axis (x-axis), and the independent variable is plotted on the vertical axis (y-axis).
   • C) The independent variable is plotted on the vertical axis (y-axis), and the controlled variables are plotted on the horizontal axis (x-axis).
   • D) The variable with the larger numerical range is plotted on the vertical axis (y-axis), regardless of experimental roles.