The “i = 1” at the bottom indicates that the summation is to start with \(\mathrm{X}_{1}\) and the 4 at the top indicates that the summation will end with \(\mathrm{X}_{4}\). because the expression on...The “i = 1” at the bottom indicates that the summation is to start with \(\mathrm{X}_{1}\) and the 4 at the top indicates that the summation will end with \(\mathrm{X}_{4}\). because the expression on the left means to sum up all the values of \(\mathrm{X}\) and then square the sum (19² = 361), whereas the expression on the right means to square the numbers and then sum the squares (90.54, as shown).
Whether you took math last semester or 40 years ago, this refresher will orient you to what you'll need to remember to complete the statistical analyses later in your class.
Whether you took math last semester or 40 years ago, this refresher will orient you to what you'll need to remember to complete the statistical analyses later in your class.
