Fill in the blanks with the corresponding numerals:

Decilessplitdata collections up intoequal parts.____________________

Commonly used percentiles split data collections up into_______________________equal parts.

What is the approximate or exactpercentage of data located between any twoconsecutive quartiles?

Express the answer as ##%

Answer:

A five-number summary can besymbolized with the quartilesas follows:Q₀___Q₁___Q₂___Q₃___Q_4.

Agree or disagree?

Agree

Disagree

Using the quartiles, therangecan be symbolized as.

Agree or disagree?

Agree

Disagree

Other basic measures of spread, dispersion or variability include the half-ranges,literally measuring half the range of a datacollection.Surprisingly, there can be three halves: the lower half form the beginning of the collection (when ordered) to the middle or median, the upper half from the middle or median to the end of the collection, and then the middle half from lower quartile or hinge (25% up from the beginning) to the upper quartile or hinge (75% up from the beginning).

The lower half-range is called low spread.

The middle half range is called mid spread.

The upper half range is called high spread.

Agree or disagree?

Agree

Disagree

The mid spread is perhaps the best known, but only when known by its fancier name, the Inter-QuartileRange or IQR.It measures the length of the box in a box plot.

Agree

Disagree

Match the formula involving differences in quartiles, in order,Q0,Q2,Q3,Q4,with the name of the half range that corresponds to it.

Some answersmay be utilized more than once or not at all.

A.Q2-Q0

B.Q3-Q1

C.Q4-Q0

D.Q4-Q2

A.

B.

C.

D.

low spread

-

A.

B.

C.

D.

mid spread

-

A.

B.

C.

D.

high spread

-

A.

B.

C.

D.

Inter-Quartile Range or IQR

A.

B.

C.

D.