# Statistics For Data Science with Python — Confidence  & Hypothesis (8/10)

confidence interval and hypothesis testing

### Confidence Interval

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832707704/wJ3m-Is1c.gif)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832709389/wTtXuQaE4.gif)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832710824/GCiykev1-.jpeg)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832712168/rVmL5OXoU.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832713599/YAX-Aftag.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832715057/WP3HRJGrh.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832716417/UOImhT9Zc.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832717810/syiH56TEm.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832719257/QAs0HXxWo.png)

### Hipothesis Tests

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832720648/Lx-T_x2DH.gif)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832722159/fh7Lwn4ev.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832723528/w04AyGjHw.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832724875/zAgurdBb5.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832726290/wj-p1t-2f.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832727616/_4K4CO2vw.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832728970/G-_0cVrmi.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832730422/nTpo_TSx9.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832731839/J-Lh2drjr.png)

### Tests Parametric & Non-Parametric

**Test Parametric**

*   Normal Distribution

Test Non-Parametric

*   Non Normal Distribution

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832733354/DoZDtf2sK.jpeg)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832734720/_cAjhMmhm.png)

### Python Notebook

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832736123/X1xllSF2P.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832737428/k17DONasf.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832739128/dUtbh7Dl-.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832740468/AcszsgXEi.png)

### SciPy Implementation

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832741821/fohCqdJbs.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832743180/F1icR4DSR.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832744517/OR5eKeM3J.png)

### Distributions

*   Z Distribution (Normal Distribution > 30 Registers)
*   t-Distribution (T Student = 30 Registers)
*   t-Distribution (T Student < 30 Registers)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832746074/jcDJEj2Oc.png)

### Degrees of Freedom

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832747388/WViQKJfH3.png)

### Chi-Square Distribution

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832748717/zGXEiDlXA.jpeg)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832750052/mZJ9pp7mN.gif)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832751498/F-y_sn11I.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832753048/qLnCUBpzs.png)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832754521/9QrrZSH4P.jpeg)

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1662832755855/7P4MYq0pp.jpeg)