I can calculate the median, mode and range from a grouped frequency table.
I can calculate the median, mode and range from a grouped frequency table.
Interval - An interval is all the values between two points.
Modal class - The modal class is the interval, or group of values, with the highest frequency in a data set.
Median class - The median class is the class which contains the central (middle) datum when the data are in numerical order.
That the interval widths need to be constant, or conversely that they can be anything.
If interested in people's ages it may be that decades makes sense once over 30 but that significant ages such as 16, 18 and 21 should form boundaries, depending on context. Encourage critical thinking for data with unequal intervals.
Loading...
mean - 6
median - 3
mode - 2
range - 17
modal class - the interval with the highest frequency in a data set
median class - the interval which contains the central datum in an ordered data set
mode - the most frequent data value in a data set
a - 4
b - 20
c - 35
median class - $$90 \leq x < 100 $$
modal class - $$100 \leq x < 105 $$
