Find the median, upper and lower quartiles of these numbers: 160, 390, 169, 175, 125, 420, 171, 250, 210, 258, 186, 243
Order the data:125, 160, 169, 171, 175, 186, 210, 243, 250, 258, 390, 420Find middle observation:[125, 160, 169, 171, 175, 186] | [210, 243, 250, 258, 390, 420]Median = (186 + 210)/2 = 198Find middle observation of each half:[125, 160, 169 | 171, 175, 186], [210, 243, 250 | 258, 390, 420]Lower quartile = (169 + 171)/2 = 170, Upper quartile = (250 + 258)/2
SL
Related Maths GCSE answers
All answers ▸How do you know what to do first when solving composite function?
f(x) = (x + 1)^2 and g(x) = 2(x - 1) Show that gf(x) = 2x(x + 2)
Solve the simultaneous equations: 5x + y = 21, x - 3y = 9
A straight line goes through the point (7, 5) with a slope of 2. What is the equation of the line?