Question

What are the quartiles for the given dataset?

115, 117, 120, 122, 125, 125, 127, 128, 131, 132, 136, 136, 140

(1 point)
Responses

Q1: 121; Q2: 127.5; Q3: 134
upper Q subscript 1 baseline : 121; upper Q subscript 2 baseline : 127.5; upper Q subscript 3 : 134

Q1: 122; Q2: 127.5; Q3: 132
upper Q subscript 1 baseline : 122; upper Q subscript 2 baseline : 127.5; upper Q subscript 3 : 132

Q1: 115; Q2: 127; Q3: 140
upper Q subscript 1 baseline : 115; upper Q subscript 2 baseline : 127; upper Q subscript 3 : 140

Q1: 121; Q2: 127; Q3: 134

Answer 1

What is the MAD and IQR for the given dataset?

1, 4, 6, 7, 9, 10, 10, 11, 12, 12, 14, 15, 17, 18, 19

(1 point)
Responses

MAD: 11; IQR: 8
MAD: 11; IQR: 8

MAD: 4; IQR: 8
MAD: 4; IQR: 8

MAD: 11; IQR: 6.5
MAD: 11; IQR: 6.5

MAD: 4; IQR: 6.5

Answer 2

Here are the prices for biweekly lawn mowing services for 13 local companies:

15, 15, 20, 30, 30, 35, 40, 40, 40, 40, 50, 50, 50

Which measure of center—mean or median—best represents the shape of the distribution?

(1 point)
Responses

Median; the shape of the distribution is skewed to the right.
Median; the shape of the distribution is skewed to the right.

Mean; the shape of the distribution is skewed to the left.
Mean; the shape of the distribution is skewed to the left.

Median; the shape of the distribution is skewed to the left.
Median; the shape of the distribution is skewed to the left.

Mean; the shape of the distribution is close to symmetrical.

Answer 3

For the given box plot, which measure of variability—range or IQR—best represents the shape of the distribution?

(1 point)
Responses

Range, the shape of the distribution is skewed to the right.
Range, the shape of the distribution is skewed to the right.

Range; the shape of the distribution is symmetrical, or close to it.
Range; the shape of the distribution is symmetrical, or close to it.

IQR, the shape of the distribution is skewed to the right.
IQR, the shape of the distribution is skewed to the right.

IQR, the shape of the distribution is symmetrical, or close to it.

Answer 4

Thank you for giving me all of the wrong answers :)