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To define statistical data points:
1. Enter data in L1, L2, or L3. (See Data editor.)
Note: Non-integer frequency elements are valid. This is
useful when entering frequencies expressed as
percentages or parts that add up to 1. However, the
sample standard deviation, Sx, is undefined for non-integer
frequencies, and Sx = Error is displayed for that value. All
other statistics are displayed.
2. Press %u. Select 1-Var or 2-Var and press
<.
3. Select L1, L2, or L3, and the frequency.
4. Press < to display the menu of variables.
5. To clear data, press
v v, select a list to clear, and
press
<.
sx or sy Population standard deviation of x or y.
Gx or Gy Sum of all x or y values.
Gx
2
or Gy
2
Sum of all x
2
or y
2
values.
Gxy Sum of (x…y) for all xy pairs.
a (2-Var) Linear regression slope.
b (2-Var) Linear regression y-intercept.
r (2-Var) Correlation coefficient.
x¢ (2-Var) Uses a and b to calculate predicted x value
when you input a y value.
y¢ (2-Var) Uses a and b to calculate predicted y value
when you input an x value.
MinX Minimum of x values.
Q1 (1-Var) Median of the elements between MinX and
Med (1st quartile).
Med Median of all data points (1-Var stats only).
Q3 (1-Var) Median of the elements between Med and
MaxX (3rd quartile).
MaxX Maximum of x values.
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