AIM: What are the measures of central tendency and how can we find them?
HW: Measures of central tendency wksht (posted below and on Jupitergrades)
Elianna earned an 80 on her first math test and a 90 on her next math test. What is her math test average?
Today's lesson served as a brief review for measures of central tendency (mean, median, mode) and range. We discussed the importance of statistics and how they allow people to gain a fast understanding of a group of numbers. Remember: measures of central tendency are numbers that describe other numbers.
The mean, or average, can be found by adding up all of the data values and dividing by the number of data values.
Median, or the middle number, is found by ordering the data values from least to greatest, then finding the middle number. If there is more than one middle number, find the average of the two.
Mode is the most occurring data value.