Texas Instruments TI-Nspire CX CAS TINSPIRE-CX-CAS Merkblatt
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Produktcode
TINSPIRE-CX-CAS
348 Lists & Spreadsheet Application
2-Sample t Interval (tInterval_2Samp)
Computes a confidence interval for the difference between two population
means (m
means (m
1
Nm
2
) when both population standard deviations (s
1
and s
2
) are
unknown. The computed confidence interval depends on the user-specified
confidence level.
confidence level.
This test is useful in determining if there is statistical significance between the
means of two samples from the same population. It is used instead of the 2-
sample z confidence interval in situations where the population is too large to
measure to determine the standard deviation.
means of two samples from the same population. It is used instead of the 2-
sample z confidence interval in situations where the population is too large to
measure to determine the standard deviation.
1-Prop z Interval (zInterval_1Prop)
Computes a confidence interval for an unknown proportion of successes. It
takes as input the count of successes in the sample
takes as input the count of successes in the sample
x
and the count of
observations in the sample
n
. The computed confidence interval depends on
the user-specified confidence level.
This test is useful in determining the probability of a given number of successes
that can be expected for a given number of trials. For instance, casino
examiners would use this test to determine if observed payouts for one slot
machine demonstrate a consistent pay out rate.
that can be expected for a given number of trials. For instance, casino
examiners would use this test to determine if observed payouts for one slot
machine demonstrate a consistent pay out rate.
2-Prop z Interval (zInterval_2Prop)
Computes a confidence interval for the difference between the proportion of
successes in two populations (p
successes in two populations (p
1
-p
2
). It takes as input the count of successes in
each sample (
x
1
and
x
2
) and the count of observations in each sample
(
n
1
and
n
2
). The computed confidence interval depends on the user-specified
confidence level.
This test is useful in determining if two rates of success differ because of
something other than sampling error and standard deviation. For example, a
bettor could use this test to determine if there is an advantage in the long run
by playing one game or machine versus playing another game or machine.
something other than sampling error and standard deviation. For example, a
bettor could use this test to determine if there is an advantage in the long run
by playing one game or machine versus playing another game or machine.
Linear Reg t Intervals (LinRegtIntervals)
Computes a linear regression t confidence interval for the slope coefficient b. If
the confidence interval contains 0, this is insufficient evidence to indicate that
the data exhibits a linear relationship.
the confidence interval contains 0, this is insufficient evidence to indicate that
the data exhibits a linear relationship.
Multiple Reg Intervals (MultRegIntervals)
Computes multiple regression prediction confidence interval for the calculated
y and a confidence for y.
y and a confidence for y.