Question

5. Find the value of x such that the data set has the given mean.
31.7, 42.8, 26.4, x; mean 35

A) x = 39.1
B) x = 42.6
C) x = 40.5
D) x = 36.8

6. Find the mean, median, mode, and range of the data set after you perform the given operation on each data value.
9, 7, 12, 13, 9, 3; add 5

A) mean: 8.8, median: 9, mode: 9, range: 10
B) mean: 8.8, median: 9, mode: 9, range: 5
C) mean: 13.8, median: 14, mode: 14, range: 5
D) mean: 13.8, median: 14, mode: 14, range: 10

Answer 1

7. Find the mean, median, mode and range of the data set after you perform the given operation on each data value.
14, 7, 34, 29, 14, 6; multiply by 6

A) mean: 17.33, median: 14, mode: 14, range: 168
B) mean: 104, median, 84, mode: 84, range 168
C) mean: 17.33, median: 84, mode: 84, range: 66
D) mean: 104, median: 14, mode: 14, range: 66

8. Find the mean, median, mode and range of the data set after you perform the given operation on each data view.
13, 17, 15, 18, 21, 13, 20; add 3.7

A) mean: 20.4, median: 20.7, mode: 16.7, range: 8
B) mean: 16.7, median: 20.7, mode: 18.7, range: 8
C) mean: 21.7, median: 14.7, mode: 16.7, range: 8
D) mean: 16.7, median: 21.7, mode: 16.7, range: 8

9. The mean of a data set is 7.8, the mode is 6.6, and the median is 6.8. What is the least possible number of data values in the set?
A) 3 data sets
B) 4 data sets
C) 5 data sets
D) 6 data sets

10. The lengths of the eletrical exension cords in a workshop are 6ft, 8ft, 25ft, 8ft, 12ft, 50ft, and 25 ft. What are the mean, median, mode and range of the lengths of the cords in inches?

Answer 2

5 is the same as the last one
solve \[\frac{31.7+42.8+26.4+x}{4}=35\]

Answer 3

looks like \(39.1\) hope that is a choice
http://www.wolframalpha.com/input/?i=%2831.7%2B42.8%2B26.4%2Bx%29%2F%284%29%3D35

Answer 4

Find the mean, median, mode, and range of the data set after you perform the given operation on each data value. 9, 7, 12, 13, 9, 3; add 5
does this mean add 5 to each entry?

Answer 5

Are you referring to #7 @satellite73

Answer 6

no that is 6

Answer 7

Oh okay yes 5 means add that to each entry.

Answer 8

yikes
so \[ 9, 7, 12, 13, 9, 3\] becomes \[14,12,17,18,14,8\] right?

Answer 9

mode is the most common number, namely \(14\)
i would use a calculator for the rest

Answer 10

here is the mean
http://www.wolframalpha.com/input/?i=mean+14%2C12%2C17%2C18%2C14%2C8

Answer 11

here is the median http://www.wolframalpha.com/input/?i=median++14%2C12%2C17%2C18%2C14%2C8

Answer 12

@satellite73 Thanks

Answer 13

yw