Vicky Hall

Vicky Hall on Measures of central tendency from a list 2 2 months, 1 week ago

Gave some feedback: Needs to be tested

Vicky Hall on Measures of central tendency from frequency tables 2 months, 2 weeks ago

Gave some feedback: Needs to be tested

Vicky Hall on Calculating expected values given a table of probabilities 3 months, 4 weeks ago

Gave some feedback: Needs to be tested

Vicky Hall on Relative Frequency 3 months, 4 weeks ago

Gave some feedback: Needs to be tested

Vicky Hall on Measures of central tendency from a list 3 months, 4 weeks ago

Gave some feedback: Needs to be tested

Vicky Hall on Probability - Notation and Conversion between Percentages, Decimals and Fractions 1 year, 5 months ago

Gave some feedback: Has some problems

Vicky Hall on Probability - Notation and Conversion between Percentages, Decimals and Fractions 1 year, 5 months ago

In part a)i), you need to untick the box in the marking section that says 'require trailing zeroes'. I just entered $0.4$ instead of $0.40$ and it marked it wrong. I would put a full stop at the end of all sentences such as 'Convert this probability to a decimal'.

Vicky Hall on Use the quadratic formula to solve an equation in terms of an unknown variable 1 year, 5 months ago

Gave some feedback: Has some problems

Vicky Hall on Use the quadratic formula to solve an equation in terms of an unknown variable 1 year, 5 months ago

This is a well conceived question but the answers look a bit nasty! It would be a much nicer question if, when we get to the point of having $\sqrt(xk^2)$, the $x$ is a square number. That way we end up with some quantity of $k$ divided by $2$, which may or may not simplify, but it looks a lot better than having a surd or a decimal.