# Processing and Representing Data - Short Problems

### Weekly Problem 23 - 2009

##### Stage: 3 Short Challenge Level:

How does Snow White need to change her value for mean-dwarf-height after a mix-up?

### Weekly Problem 26 - 2009

##### Stage: 3 Short Challenge Level:

From the mean weight of five ballet dancers and the mean weight of ten rugby, what is the average weight of all fifteen people?

### Weekly Problem 36 - 2009

##### Stage: 2 and 3 Short Challenge Level:

From the mean of 64 numbers, and the mean of the first 36 of these numbers, can you work out the mean of the last 28 numbers?

### Weekly Problem 12 - 2010

##### Stage: 2 and 3 Short Challenge Level:

Can Emily increase her average test score to more than $80$%? Find out how many more tests she must take to do so.