The Student Room Group

S1 Histogram help!

Argh cannot get my head around histograms :frown:

Anyway, this is the question:
arghoxa.jpg


I know it must be the simplest thing ever since it's question 3 and worth 3 marks :L
Reply 1
Avatar for ztibor
ztibor
10
Original post by bronn
Argh cannot get my head around histograms :frown:

Anyway, this is the question:
arghoxa.jpg


I know it must be the simplest thing ever since it's question 3 and worth 3 marks :L


There is 6 integere values for x in the range of 10-15 which means 2cm for the width of the bar representing this range, and there is 3 integer values in the range of 16-18, which is half of the 6 values.
What do you think about the with of the bar representing this range?
Similarly to the frequencies.
5 cm height represents 15, then 5/15=1/3 cm represents frequency 1.
How many cm represents frequency 9 (9 times 1)?
Reply 2
Avatar for bronn
bronn
OP
9
Original post by ztibor
There is 6 integere values for x in the range of 10-15 which means 2cm for the width of the bar representing this range, and there is 3 integer values in the range of 16-18, which is half of the 6 values.
What do you think about the with of the bar representing this range?

Ahh right so the width must be half the width of the range 10-15 so is 1cm?


Original post by ztibor
Similarly to the frequencies.
5 cm height represents 15, then 5/15=1/3 cm represents frequency 1.
How many cm represents frequency 9 (9 times 1)?

this doesn't make sense to me? The mark scheme answer is 6cm?

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you