One Sample T-Test

hanaml.TTest1Samp is a R wrapper for SAP HANA PAL T Test.

hanaml.TTest1Samp(
  data,
  col = NULL,
  mu = NULL,
  test.type = NULL,
  conf.level = NULL
)

Arguments

data

DataFrame
DataFrame containting the data.
col

character, optional
Names of column for T-test.
No default value.
mu

double, optional
Hypothesized mean of the population underlying the sample.
Defaults to 0.
test.type

character, optional
The alternative hypothesis type.

  • 'two_sides'

  • 'less'

  • 'greater'

Defaults to 'two_sides'.
conf.level

double, optional
Confidence level for alternative hypothesis confidence interval.
Defaults to 0.95.

Value

Dataframe
Dataframe containing the statistics results from the t-test.

Details

It is a statistical procedure used to determine whether a sample of observations could have been generated by a process with a specific mean.

Examples

Input DataFrame data:

> data$Collect()
  X1 X2
1  1 10
2  2 12
3  4 11
4  7 15
5  3 10

Call the function:

> result <- hanaml.TTest1Samp(data)

Output:

> result$Collect()
               STAT_NAME    STAT_VALUE
1                t-value -1.406288e+01
2      degree of freedom  4.000000e+00
3                p-value  1.483726e-04
4 _PAL_MEAN_DIFFERENCES_ -8.200000e+00
5       confidence level  9.500000e-01
6             lowerLimit -9.818932e+00
7             upperLimit -6.581068e+00