To determine the effective between the different filter in ph and turbidity

Paired Samples Statistics

Mean N Std. Deviation Std. Error Mean

Pair 1 turbidity_initial 1.7320E2 10 4.23740 1.33998

turbidity_filterB 19.7900 10 5.94581 1.88023

Paired Samples Correlations

N Correlation Sig.

Pair 1 turbidity_initial & turbidity_filterB 10 .252 .483

Paired Samples Test

Paired Differences

95% Confidence Interval of the

Difference

Mean Std. Deviation Std. Error Mean Lower Upper t df Sig. (2-tailed)

Pair 1 turbidity_initial - turbidity_filterB 1.53410E2 6.37438 2.01576 148.85005 157.96995 76.105 9 .000

[DataSet0] C:\Users\Windows10\Documents\turbidity nhs.sav

Paired Samples Statistics

Mean N Std. Deviation Std. Error Mean

Pair 1 turbidity_initial 1.7320E2 10 4.23740 1.33998

turbidity_filterA 13.5350 10 8.93549 2.82565

Paired Samples Correlations

N Correlation Sig.

Pair 1 turbidity_initial & turbidity_filterA 10 -.126 .728

 Paired Samples Test

Paired Differences

95% Confidence Interval of the

Difference

Mean Std. Deviation Std. Error Mean Lower Upper t df Sig. (2-tailed)

Pair 1 turbidity_initial - turbidity_filterA 1.59665E2 10.36140 3.27656 152.25290 167.07710 48.729 9 .000

T-Test
[DataSet0] C:\Users\Windows10\Documents\turbidity nhs.sav

Paired Samples Statistics

Mean N Std. Deviation Std. Error Mean

Pair 1 ph_initial 7.0500 10 .11652 .03685

ph_filterB 7.7280 10 .09496 .03003

Paired Samples Correlations

N Correlation Sig.

Pair 1 ph_initial & ph_filterB 10 .151 .678

Paired Samples Test

Paired Differences

95% Confidence Interval of the

Difference

Mean Std. Deviation Std. Error Mean Lower Upper t df Sig. (2-tailed)

Pair 1 ph_initial - ph_filterB -.67800 .13879 .04389 -.77728 -.57872 -15.448 9 .000

[DataSet0] C:\Users\Windows10\Documents\turbidity nhs.sav

Paired Samples Statistics

Mean N Std. Deviation Std. Error Mean

Pair 1 ph_initial 7.0500 10 .11652 .03685

ph_filterA 7.5600 10 .08055 .02547

 Paired Samples Correlations

N Correlation Sig.

Pair 1 ph_initial & ph_filterA 10 .408 .241

Paired Samples Test

Paired Differences t df Sig. (2-tailed)

95% Confidence Interval of the

Difference

Mean Std. Deviation Std. Error Mean Lower Upper

Pair 1 ph_initial - ph_filterA -.51000 .11136 .03521 -.58966 -.43034 -14.483 9 .000

To determine the significant difference between the two filters

Group Statistics

filters N Mean Std. Deviation Std. Error Mean

ph 1 10 7.5600 .08055 .02547

2 10 7.7280 .09496 .03003

turbidity 1 10 13.5350 8.93549 2.82565

2 10 19.7900 5.94581 1.88023

Independent Samples Test

Levene's Test for Equality of

Variances t-test for Equality of Means

95% Confidence Interval of the

Difference
Std. Error
F Sig. t df Sig. (2-tailed) Mean Difference Difference Lower Upper

ph Equal variances assumed .799 .383 -4.266 18 .000 -.16800 .03938 -.25073 -.08527

Equal variances not assumed -4.266 17.534 .000 -.16800 .03938 -.25089 -.08511

turbidity Equal variances assumed 2.719 .117 -1.843 18 .082 -6.25500 3.39405 -13.38563 .87563

Equal variances not assumed -1.843 15.664 .084 -6.25500 3.39405 -13.46264 .95264