Question

Question 7

Order the following levels of measurement from highest to lowest in terms of requirements.

      -       1.       2.       3.       4.      

Nominal

      -       1.       2.       3.       4.      

Ratio

      -       1.       2.       3.       4.      

Interval

      -       1.       2.       3.       4.      

Ordinal

Question 8

To show changes in the rate of homicide from 1990 to the present, by year, a researcher would probably use a

		line chart
		pie chart
		bar graph
		histogram

Question 9

What type of value can greatly affect a dataset due to its extreme nature?

		An inferential statistic
		A descriptive statistic
		A parameter
		An outlier

Question 11

Nominal and Ordinal levels of measurement are examples of what type of variable?

fill in the black

Question 12

This distribution is used for confidence intervals with small samples.

		Z
		T
		F
		χ²

Question 14

Explain in your own words why the standard error is required for creating confidence intervals.

Answer 1

Solution8:

line chart is best for depicting homicide rates

Time along X  axis

and homicide rate along Y axis

line chart

ANSWER:

line chart

Solution9:

an outlier is influential observation affects mean,stddev

An outlier

ANSWER:

An outlier

Solution11

Nominal and Ordinal levels of measurement are examples of what type of variable?

they are qualitative variable

ANSWER:

qualitative variable

Solution12

This distribution is used for confidence intervals with small samples.

For small sample n<30 use t distribution

ANSWER

T