Download TI-30Xa (Texas Instruments)

Quick Reference to Calculate the sample Mean, Variance, and Standard Deviation
TI-30Xa (Texas Instruments)
Data Entry:
Sample Mean X :
9, 25, 47
Clear last entry by pressing
CSR
2nd
(If “Error” appears, simply press
ON/C
Enter 9 and press

Enter 25 and press

Enter 47 and press

To find the mean of the entered data
(9, 25, 47)
Press
2nd
x
*You will see 27 as a returned value.
*You will see n = 3. Data successfully entered.
2
Sample Standard Deviation s:
Sample Variance s :
To find the standard deviation of the
entered data (9, 25, 47)
To find the variance after finding the
standard deviation,
Press
2nd
 x n 1
*You will see 19.07878… as a returned
value.
Press
x2
*You will see 364 as a returned value.
Quick Reference to Calculate the sample Mean, Variance, and Standard Deviation
TI-30XIIS (Texas Instruments)
Statistics Mode:
Clearing Data
To choose the statistics mode
Clear last entry (if exists) by pressing
STAT
2nd DATA
STAT 1- VAR
2nd DATA Enter
Press
CLRDATA
◄
Enter
=
=
*All Data has been successfully cleared.
Data Entry:
9, 25, 47
Press DATA
Press
9
Sample Mean X :
▼
Press
▼
Press
▼
Press
▼
x1  9
Enter
=
To find the mean of the entered data
(9, 25, 47)
FRQ=1
Press
25
Enter
=
x2  25
FRQ=1
47
Enter
=
x
*You will see 27 as a returned value.
x3  47
*All Data has been successfully entered.
2
Sample Standard Deviation s:
Sample Variance s :
To find the standard deviation of the
entered data (9, 25, 47)
To find the variance after finding the
standard deviation,
Press
2nd
 x n 1
*You will see 19.07878… as a returned
value.
Press
x2
*You will see 364 as a returned value.
Quick Reference to Calculate the sample Mean, Variance, and Standard Deviation
Fx-300MS (CASIO)
Statistics Mode:
Data Entry:
9, 25, 47
Enter 9 and press
SD
Press Mode 2 to choose statistics mode.
M+
DT
Enter 25 and press M+
Clear last entry by pressing
SHIFT CLR
1
DT
Enter 47 and press M+
=
DT
*You will see “Stat Clear”.
You are ready to enter the data.
Sample Mean X :
Sample Standard Deviation
To find the mean of the entered data
(9, 25, 47)
Press
S-VAR x
1
2
SHIFT
=
2
Sample Variance s :
To find the variance after finding the
standard deviation,
x2
*You will see 364 as a returned value.
s:
To find the standard deviation of the
entered data (9, 25, 47)
S-VAR x n 1
Press
*You will see 27 as a returned value.
Press
*You will see n = 3. Data successfully entered.
SHIFT
2
3
=
*You will see 19.07878… as a returned
value.