A)
I) 114.31
ii)114
iii) 114, 107
B)
x frequency
90-99: 1
100-109: 5
110-119: 2
120-129: 1
130-139: 2
Step-by-step explanation:
A x. f. fx
97. 1. 97
100. 1. 100
103. 1. 103
105. 1. 105
107. 2. 214
108. 1. 108
114. 2. 228
115. 1. 115
122. 1. 122
137. 1. 137
139. 1. 139.
13 1468
I) mean: £fx. =. 1468
£f. 13
= 114.3076
=114.31 to 2 decimal places
Ii) median: 97,100,103,105,107,107,108,114,114,115,122,137,139
:• median= 108
III) mode = 107,114
