# Sdev; Send; Seq - HP 48gII Advanced User's Reference Manual

Graphing calculator.

Input/Output:

## SDEV

Type:
Command
Description: Standard Deviation Command: Calculates the sample standard deviation of each of the m
columns of coordinate values in the current statistics matrix (reserved variable DAT).
SDEV returns a vector of m real numbers, or a single real number if m = 1. The standard
deviation (the square root of the variances) is computed using this formula:
where x
is the ith coordinate value in a column,
i
the number of data points.
Access:
...µ
Input/Output:
MAX , MEAN, MIN , PSDEV, PVAR, TOT, VAR

### SEND

Type:
Command
Description: Send Object Command: Sends a copy of the named objects to a Kermit device.
Data is always sent from a local Kermit, but can be sent either to another local Kermit (which
must execute RECV or RECN) or to a server Kermit.
To rename an object when sending it, include the old and new names in an embedded list.
...µ
Access:
Flags:
I/O Device flag (-33), I/O Data Format (-35), I/O Messages (-39)
Input/Output:
BAUD, CLOSEIO, CKSM, FINISH, KERRM, KGET, PARITY, RECN, RECV, SERVER,
TRANSIO

### SEQ

Type:
Command
Description: Sequential Calculation Command: Returns a list of results generated by repeatedly executing
obj
using index over the range x
exec
obj
is nominally a program or algebraic object that is a function of index, but can actually be an
exec
object. index must be a global or local name. The remaining objects can be anything that will
evaluate to real numbers.
Level 1/Argument 1
Grob
SDEV
Level 1/Argument 1
SEND
Level 1/Argument 1
'name'
{ name
... name
1
{{ name
name
old
new
n
1
2
----------- -
x
x
i
n 1
i
=
1
is the mean of the data in this column, and n is
x
}
n
} name ... }
to x
, in increments of x
start
end
Full Command and Function Reference 3-161
Level 1/Item 1
Level 1/Item 1
x
sdev
[ x
x
... x
]
sdev 1
sdev 2
sdev m
Level 1/Item 1
.
incr