The masses of 12 parcels are summarised in the table below.
| Parcel | A | B | C | D | E | F | G | H | I | J | K | L |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mass (g) | 298 | 302 | 301 | 299 | 304 | 297 | 300 | 303 | 296 | 305 | 299 | 301 |
Find the mean mass.
Find the standard deviation for these masses.
Find the median, upper and lower quartiles of these data.
32 exam-style questions on Edexcel AS Level Maths Measures of Location and Spread, covering 2.1 Measures of Central Tendency, 2.2 Other Measures of Location, 2.3 Measures of Spread, 2.4 Variance and Standard Deviation, and 2.5 Coding. Each one has a worked solution and a mark scheme showing where the marks go.