Stats - Stanford Research Systems SR850 User Manual

Math Menu

Stats

Do Stats:
Limits
Left:
Right:
Return:
Do Stats
Left and Right Limit
Return
The Stats sub menu calculates a variety of statistical information about a
chart display calculation region defined by the Left and Right Limits.
Pressing this key starts the actual calculation. While calculations are in
progress, the "Calculating Statistics..." message is displayed at the
bottom of the screen. For the display region defined by the Left and Right
Limits, the mean, standard deviation, total, and delta time defined by the
region endpoints are calculated and displayed below the graph. The total
is the sum of all the data points within the region. The delta time is the
time difference between the limits.
Total = -4.799722e+000
Mean = -7.163765e-002
The Left and Right Limit functions set the left and right limits of the calcu-
lation region. The default positions of the limits are the the left and right
edges of the graph. To move a limit, use the knob to move the cursor to
the desired location of the limit (press [CURSOR] to activate the cursor).
Pressing the Left or Right Limit key will set the limit to the cursor position.
The Limits are set each time a limit key is pressed. The limits are shown
as heavy dashed vertical lines on the graph. See the description of Limits
under the Fit sub menu.
The Return key will return to the main Math menu.
5-40
MATH
Stats
Do Stats
Left Limit
Right Limit
Return
= 1.139963e-001
Delta t = 4.288000e+000 s