Lesson 1.1

Question 1

What is descriptive statistics?

Answer 1

Describe or summarize data that we already have

Question 2

If you have the test scores from a classroom and transferred the known grades into a graph would that be descriptive or inferential statistics?

Answer 2

Descriptive

Question 3

What is inferential statistics?

Answer 3

Infers things about data that we cannot directly measure.

Question 4

If you took 5000 men and women from all across America and weighed them only to noticed that majority, not all, men weighed more than women. Knowing this you came to the hypothesis that there are bigger men in America than there are women. Is this descriptive or inferential statistics?

Answer 4

Inferential statistics

Question 5

What are the 3 phases of statistical study?

Answer 5

Phase 1: Data Gathering

Phase 2: Data Organization and Analysis

Phase 3: Probability based inference

Question 6

What statistical phases does descriptive statistics include?

Answer 6

Data gathering and Data organization and analysis

Question 7

What statistical phases does inferential statistics include?

Answer 7

Data gathering, Data organizations de analysis, and probability based inference

Question 8

What is data gathering aka phase 1?

Answer 8

Any process that gets you data

Question 9

What is the most crucial statistical phase and why?

Answer 9

Data gathering the 1st phase because they are the hardest to correct if one is wrong they all are wrong

Question 10

What is the data organization aka phase 2?

Answer 10

Makes the data into a graph, chart, or table, and calculates the numbers you get from the data

Question 11

What is data analysis aka phase 2?

Answer 11

Looks for patterns in the graphs or statistics

Question 12

What does exponentially mean?

Answer 12

Increasing at an increasing rate.

Question 13

What is exploratory data analysis?

Answer 13

A study that proceeds without trying to answer any particular question.

Question 14

What is probability based inference aka phase 3?

Answer 14

Using the mathematical rules about chance to determine how likely or unlikely something is

Question 15

What is one bit of information?

Answer 15

Datum

Question 16

What is many bits of information?

Answer 16

Data

Question 17

What is a data set?

Answer 17

One set of data or one set of many bits of information

Question 18

What is numeric data?

Answer 18

Data in the form of number that can be sorted and worked with mathematically

Question 19

What is categorical data or non-numeric data?

Answer 19

Describes information descriptively rather than numerically ie categories like age, gender, etc

Question 20

What is measured data or continuous data?

Answer 20

Anything that can be measured and can be fractions or decimals of any length ie. lengths, weights, volumes, and elapsed time

Question 21

What is counted data or discrete data?

Answer 21

Anything counted and can only be whole numbers ie. Number of people or outcomes of dice