The depth d centimeters of a river was recorded each day during a period of one year (365 days) when the frequency curve
300
frequency 200
100
ie
20
30
40
SO
60
70
depth, d (cm)
(a) Use the cumulative frequency curve to find
the median depth
(i) the inter-quartile range.
(1) the depth at the 40 percentile,
(iv) the number of days when the depth of the river was at least 25 cm.

whole number data type

step-by-step explanation:

as whole number type represents whole number

like 1, 2 ,3, 4

in other words the whole numbers are those numbers which cannot be written infraction.

since we can take days as a whole number i.e 1 day 2 day and we cannot write 1.2 day hence we will use whole number data type

step-by-step explanation:

rectangles are made up of 4 right angles, which means that a side and a base meet perpendicular to one another.   their slopes then have to reflect perpendicular slopes.   perpendicular slopes are opposite reciprocals of one another.   for example, if the slope of one line is +2/3, then the perpendicular slope to that would be -3/2.   so we look for that combination in our choices.

all of them satisfy that condition (so what's the question, i guess? )