# Reporting and Assessing Statistical Evidence 2

# PSM 2

## Bennett Kleinberg

### 26 Feb 2019

Probability, Statistics & Modeling II

### Lecture 7

Statistical reporting 2 + assessment details

### Which question do you have?

## Today

- recap week 1-5
- statistical reporting
- assessment details

## Week 1

- marginal probability
- conditional probability
- Bayes’ Rule
- Simpson’s paradox

## Week 2

- modelling data
- regression idea
- regression effects

## Week 3

- GLM idea
- logistic regression
- model comparison

## Week 4

- GLM for t-tests
- GLM for ANOVAs
- Relationship between t-test, ANOVA, lm

## Week 5

- non-paramtric tests
- esp. ranking methods
- discrete data
- R by C (ChiSquare)
- X by Y by Z (loglinear)

## A tricky time

- Reproducibility crisis (2015)
- Statistics crisis (2016)

## A tricky time

- QRPs widespread
- Some remedies in place
- preregistration
- data sharing

## A tricky time

Problems:

- preregistration a long way from the norm
- data sharing is often a taboo

So what can we do without relying on (old) researchers improving their research practices?

## Ways forward

- get the journals on board
- get the funding bodies on board
- tackle the NHST problem

### My first “science” surprise