Section 9.1 Extra ln-Class Exercises
The amount (in dollars) paid by 20
students for textbooks during the fall
term are given on the right.
Complete the frequency table below.
INTERVAL
;:A2s m
G*s/ E- Try)
€t
AE-m
@
@
,,€)
Ilsj
XAIuo
re
\it
FREqUENCY
- L9.99
2A - 29.99
10
- 39.99
- 49.99
50 - s9.99
60 - 69.99
30
40
Does the histogram below represent this data?
0
10-19.99
o-
C*-) \--)
-*
20-29.99
6*"
30-39.99 4b49.99 50-s9.99 60-69 .99
3*- $"--
Jr--
+ L-'
For the following set of numbers, find the mean:
t4, t5,27 , L2,27, L7, L3
.-
X
zrq nbjTilHg]}J?i13
1
(or
\^:,s 9t* \\ts rnsd\
cs)o*
q
t&u.$r$i
sc^".!,\i.
Jo*
Find the mean of the quiz scores in the table below.
Round answer to nearest tenth.
VATUE
FREQUENCY
LI
2t
4(
13
2
t4
5t
2
z fidct
$ o&frenS
t *'lirr'heerls
&
,Jl**)
2,zr\t,ll
N=
\=
r\l rltr I 3,13
l3
B+s}rl,
J,l llrlt,lY,lY
2.+1+\\ t\\+l\+lhl
Ir+Ll
ryt
ton;lns.rr
Nrltl fltl+,tt+ltt
--. tlll,lI
L
(ot Ys^ Q-o,,^. \^l,qfu S'F+, fnrdq
Sclt4$'$,t VQt .$t$.t)
o\ff
J
For the following set of numbers, find the mode.
69,70,68,76,70,65,72
/t-n fi\oD€: !^"t
6t and
$fd"ffe*it
-1
0
(br-J"!)
For the following set of numbers, find the median.
LL, L3,24,9,24, L4, tA
fnadshr: ilr,4&,
O0S *s
* Ln$rg*c [t]
i* ord.*-
9 ,lo , ll , l), lT, aY, zT
ft d;s'r\ iS J-Ij
-n
rt
-
For the following set of numbers, find the median.
Round to the nearest tenth as needed.
49,66,62,4L,46, 53
m'dlqr* l^ pf{lrrl $tl
(',{ r\o ,iyh $ iA ir 9.t vnJrddh,
q-r,l- crryth. 1- rr'ddh 0hot
lhQ,$o-,
l, $6, :q' s l; 62, 66
nnc/l.i.^is
ry
=ql:st
-
The number of recognized blood types varies by species, as indicated by
the table below. Find the mean, median, and mode of this data. For the
mean, round to two decimal places as needed.
ANIMAL # OF BLOOD
A
22
B
c
18
L6
D
LZ
E
L0
l8
F
\(-.e)
G
4
J
/3
K
\g
L
M
+ tb+, L+
2
p+8+frs
lj
I
tt t\t3+ 3+L
f: {+ = t,ts 0"e+J
=J
:
fv\rd,io- I r
t
t-
n^o&
il
-
3,1
---4
--1
r*Glh^
l4
I
n
(
5
H
)(=
WPES
t'
('lr;t^.{"t)