The following screen shots may be helpful.
See also chapter 12 sections 10-13, 17-18, 21,
25, 31-36 of the manual.
(A) Enter a list of values
The data for tests A and B (page 6 of notes)
are entered in lists L1 and L2.
(B) Calculate one-variable statistics for a list of
values
Calculations are for test A marks (page 6
of notes).
mean
sum of values
sum of squares
sample s.d.
population s.d.
number of values
smallest value
1st quartile
median
3rd quartile
largest value
(C) Draw box plot for list of values (and use TRACE)
Choose between regular and modified box plot
(latter shows outliers).
Side by side box plots are shown for the data
for tests A and B (page 6 of notes).
(D) Calculate one-variable statistics for an ungrouped
frequency distribution
The data at the bottom of page 1 of the notes
are entered
(marks in list L3 and frequencies in
list L4).
(E) Calculate one-variable statistics for a grouped
frequency distribution (use midpoints as values)
The data at the bottom of page 1 of the notes
are entered
(midpoints in list L5 and frequencies
in list L6).
The rest of the figures (smallest value,
1st quartile, median, 3rd quartile and
largest value) are meaningless because
they are not based on the actual values.
(F) Draw histogram for a list of values
The choice of the class intervals affects
the appearance of the histogram.
Consider the data for test A (page 6 of notes).
Changing the values of Xmin, Xmax
and Xscl affects the appearance of the histogram.
(G) Draw histogram for a grouped frequency distribution
(use midpoints as values)
Consider the data at the bottom of page 1
of the notes
(midpoints in list L5 and frequencies
in list L6).
Use the class boundaries and the class
width.
(H) Setting up a new list name
Use INS.
Enter name.
Enter values.
Select name from LIST menu to enter in STAT
PLOT menu.
The modified box plot shows the value
50 as an outlier. The left whisker starts at 75 (the next largest value).
Select name from LIST menu to enter after
1-Var Stats.
(I) Draw cumulative frequency polygon
The cumulative frequency distribution data
(page 3 of notes) are entered in lists named X and CF.
Select names from LIST menu to enter
in STAT PLOT menu.
