Today we started our last unit: Unit 6 - Describing Data. We reviewed the 5 number summary (the values needed in order to make a box and whisker plot). We also reviewed the range (maximum - minimum), and the interquartile range which is also known as the IQR. Calculate the IQR by taking your Upper Quartile/Q3 and subract the Lower Quartile/Q1 from that. In other words, IQR = Q3 - Q1. We completed the guided notes on our statistic vocabulary and practiced identifying the 5 number summary. We then used the 5 number summary to make a box and whisker plot. We then compared how the same set of data looks when plotted as a box and whisker plot, a dot plot, a frequency table and a histogram. Homework is to complete the basketball box and whisker plot worksheet.
Today we started Unit 5 - Geometric and Algebraic Connections. We reviewed what a midpoint is. A midpoint is the middle of a line segment. It divides a line segment into two equal parts. To calculate a midpoint, you need two coordinate points (x1, y1) & (x2, y2). You will either be given the two coordinate points, or you will be given a coordinate plane with a line segment. If you are given a line segment, you will have to determine the coordinate points for the two endpoints.
To calculate the midpoint,
1) add the two x values & then divide by 2 to get the x-value of the midpoint
2) add the two y values & then divide by 2 to get the y-value of the midpoint