7/21/2019 MA3110 Statistics Week One Assignments

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7/21/2019 MA3110 Statistics Week One Assignments

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TASK TWO

3.8:

A. + "ould use the mean* this is #ecause the mean is more effected #y the small

si%ed families "ith small incomes. This "ill (ive a more accurate !icture of the

overall avera(e of "ealth in America. +f the data "ere more s!ecific as to

descri#e a s!ecific si%e household, + "ould use median.

3.14

A. + + + +

- -

.

0

/

. Mode -

3.18 Data Set '.'2'.2'.42'.42'.42'.42'.42'.52'.67

A. Mean:. . . . . . . . .

-.

- '.4

. Median: '.4!. Mode: '.4

7/21/2019 MA3110 Statistics Week One Assignments

3/3

TASK THREE

8ico Score

""4 6131 96.6 6363

"#3 40.6 94.6 /13

"#8 9.6 36'6

714 9/.6 01

7$1 96.6 65

7$3 94.6 3

77# 15.05 34

78# 5.05 456

8%& /1.05 155

818 '4.05 3'6

834 43.05 '3/1

83" 4'.05 '35

a: ;an(e< = 1'/

#: =arianceeviation< - ''.50 or '

d) Since the mean of the 8+O scores is 45 and the standard deviation of the

mean is ''.5* A 8+O score of '00 "ould #e &uite unusual as the lo"est the

score could #e "ould #e .