Statistics Exam

A supervisor must give a summary evaluation rating from among the choices given below: 1) Poor 2) Fair 3) Good 4) Very Good 5) Excellent

-qualitative -neither -ordinal

The lifetimes of 100 FIVE volt batteries is recorded.

-quantitative -continuous -ratio

Birth years of each person in your family.

-quantitative -discrete -interval

You order a pizza . The kind of pizza you order is recorded by entering the appropriate number in an order form. The numbers and toppings used are given below. 1) Pepperoni 2) Mushrooms 3) Black Olives 4) Sausage

-quantitative -neither -nominal

The pizza pie n' go sells about 1790 one-topping pizzas a month. The pie chart displays the most requested one-topping pizzas, by percentage, for one month. round off your answers to the nearest integer. determine the number of ham pizzas sold- 40.5%

.405 X 1790= 724.95 or 725

Find the mean

1-Vars Stats

The number of hours a group of children in Mrs. Smith's kindergarten class play outside.

All the children in Mrs. Smith's class

Relative Frequency Formula

Class Frequency= F Sample size= N F/N

Quantitative Data

Consists of counts or measurements

Qualitative Data

Consists of labels or descriptions of traits

Widths of the doors in a restaurant

Continuous

Class width Formula

Highest number in the chart - lowest number in the chart/ number of classes

Class Midpoint Formula

Lower limit + Upper limit/2

Frequency

Number of times a number per class occurs

The number of hours a group if 6 children in Mrs. Smith's kindergarten class sleep in a day.

Population: All students in Mrs. Smith's kindergarten class Sample: 6 children selected in Mrs. Smith's kindergarten class

Religious affiliations are an example of what kind of data?

Qualitative

Boiling points in degrees Celsius for various substances are an example of which type of data?

Quantitative

Continuous Data

Quantitative data that can take on any value in a given interval and are usually measurements

Discrete Data

Quantitative data that can take on only particular values and are usually counts

________ occurs if a researcher intentionally chooses a favorable sample

Researcher Bias

The heights of 5 out of the 34 pepper plants at Mr. Leonardo's greenhouse

Sample

Cumulative Frequency

Sum of the frequencies of a given class and all previous classes

A scientist interviews every tenth number from the entire sampling frame.

Systematic Sampling

parameter

a numerical quantity measuring some aspect of a population

Continuous

data that can take any value within some interval

discrete

data that can take on any particular values and cannot take on the values in between

The number of suitcases loaded onto various airplanes

discrete

Calculate GPA:

grade or GPA X number of hours added up/ number of hours

_______ is when a person has given their consent based on understanding the actions and facts of a study

informed consent

Name of TV shows taped in Los Angeles are an example of which type of data.

neither

Types of movies people go to see

neither

The annual salaries of ALL the parents of your classmates.

population

Nominal

qualitative data consisting of labels or names

Ordinal

qualitative data that can be arranged in a meaningful order, but calculations such as addition or division do not make sense

Interval

quantitative data that can be arranged in a meaningful order, and differences between data entries are meaningful

ratio

quantitative data that can be ordered, differences between data entries are meaningful, and the zero point indicates the absence of everything

inferential

used to make conclusions about a population from sample data