HP 10B - Manual (Page 91)

Summary of Statistical Calculations
Some functions return two values. The : annunciator indicates that two
values have been returned. Press BisWAPl to sec the hidden value.
Keys Description SIswAPi to Display
Arithmetic mean (aver­
age) of the y-values. Mean (average) of the
y-values if you entered
y-data.
Mean of the x-values
weighted by the y-vaiues.
Sampie standard devia­
tion of the x-values.*
Sample standard devia­
tion of the y-values if you
entered y-data.*
Mlerx,{ry\
Popuiation standard devi­
ation of the x-values.*
Population standard devi­
ation of the y-values if
you entered y-data.*
y-value
Idir] Estimate of x for a given
value of
y.
Correlation coefficient.!
y-value Estimate of
y
for a given
value of X.
Slope (m) of calculated
line.
0|[Em|
y-intercept (b) of the cal­
culated line.
Slope (m) of the calcu­
lated line.
* The sample standard deviation assumes that the data is a sampling of a larger,
complete set of data. The population standard deviation assumes that the data con­
stitutes the entire population.
t The correlation coefficient is a number in the range * 1 through +1 that measures
how closety the data fits the calculated lino. A value of -f 1 indicates a perfect positive
correlation, and -1 indicates a perfect negative correlation. A value close to zero
indicates the line is a poor fit.
88 7: Statistical Calculations