# Maths for Smart Lawyers

Two-hour CPD session for smart lawyers to brush up their maths and spreadsheet skills

I'm quite good with numbers, and I am good at explaining things.

So I run an occasional two-hour course to help lawyers improve their maths and spreadsheet skills:

Book here through MBL Seminars

*UPDATE January 2022:*

*This course is now available as a self-study course, if you prefer that to sitting through a 1.5hr lecture. The self-study version covers the same material as the MBL Seminar version as a series of short videos interspersed with exercises to enable you to check your understanding.** Self-study version of Maths for Smart Lawyers.*

As a business owner I've had lots of dealings with lawyers. I have noticed that otherwise super-smart lawyers often have gaps in their maths understanding. They have not studied maths since they were 16 and never experienced the geeky maths-is-good culture which now pervades other professions like finance and medicine. But lawyers are smart - these gaps are easily fixed, which is what this short course does.

**Here is what we cover in detail:**

**Spreadsheet basics**

- How to lay out your spreadsheet so you can work on it faster
- How to build in simple checks to detect your own common mistakes
- Cleaning data that you have copy-pasted from somewhere else so it is usable
- A quick look at lookup tables, pivot tables, other bits

**Working with probabilities**

- Why adding probabilities together sometimes doesn’t work
- Review of the ‘prosecutor’s fallacy’
- Understanding Bayesian reasoning (e.g. why 1% false positive rate can mean 90% of positives are false)
- Statistical significance

**Overview of some financial stuff**

- P&L vs Balance Sheet vs Cashflow
- Discounted cashflow / discount rate
- Equations with a big sigma symbol in them
- Calculating percentage change correctly
- CAGR

**Refresher on maths questions you might otherwise be afraid to ask, like:**

- Why increasing 100 by 10% gets you 110, but decreasing that by 10% again gets you 99
- Why dividing by 0.5 is the same as multiplying by 2
- Why two years of 10% growth is not the same as 20% growth
- BODMAS/BIDMAS

**Interesting titbits which you’ll probably not need, but will make you feel smart if you can explain them:**

- Benford’s law (used to detect fraudulent figures)
- Monty Hall problem
- +whatever else we have time for

Here are some testimonials from previous attendees:

*"I thought I'd engage in some home-schooling for myself and I was not disappointed. Maths, probabilities and spreadsheets should form part of lawyers' training"* - **Hugh Elder, Former President of the London Solicitors Litigation Association**

*"Never liked double maths at school but two hours with Bruce flashed by. Entertaining, informative, useful." *- **Stephen Walker, Solicitor & Mediator**

*"Thanks Bruce for a great session. I genuinely enjoyed the opportunity to refresh my rusty maths and learn some new points that I can see will help me analyse arguments and present information in a snappy way."* - **Philippa Brown, CEDR mediator**

*"Many thanks Bruce for a most useful and enjoyable session."* **John Quigley, Data Protection Lawyer**

Book the live-at-your-desk version here through MBL Seminars

Or:

Purchase access to the self-study version of Maths for Smart Lawyers.