A x 3, T ] 6, A x 1 = t – Casio fx-570MS User Manual
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4
.
Calculate the sample standard deviation of the data.
t
A X 3 =
The above shows that the mean is 11.82 seconds, and the sample standard deviation is 0.82.
5
.
You can view values you have already input by using the
]
and
[
keys to scroll
them on the display.
You can also edit a displayed value and recalculate, if you want.
For the second part of this problem, first display the first value (12.5 seconds).
t ]
6
.
Input the new value (11.1) and then press
=
.
11.1
=
7
.
Press the
]
key a number of times to display the other data item to be edited (12.8 seconds for
runner 4 in this example), and then input the new data (11.7 seconds).
]
]
]
] ] ]
11.7
=
8
.
Calculate the mean and sample standard deviation of the data.
t
A X 1 =
t
A X 3 =
The above shows that the mean is 11.32 seconds, and the sample standard deviation is 0.37.
Statistics Problems