Statistical Data (Exercises)

Exercises.

TEST YOURSELF!!!

Click the link below:

Quantitative Data Vs Qualitative Data Exercises


Discrete Data Vs Continuous Data Exercises

Statistical Data Part V

Continuous Data

Continuous Data can take any value (within a range). the data that can be measured.

Examples:

• A person's height: could be any value (within the range of human heights), not just certain fixed heights,
• Time in a race: you could even measure it to fractions of a second,
• A Cat's weight,
• The length of a leaf,
• The length of a paper

Statistical Data Part IV

Discrete Data

Discrete data can only take certain values. the only data that you can count.

Example 1: the results of rolling 2 dice:

Can only have the values 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12

Example 2:

Number of students taking this class.

Example 3:

Number of people who vote for a particular candidate in an election

Statistical Data Part III

Quantitative Data

Quantitative data is a numerical measurement expressed not by means of a natural language description, but rather in terms of numbers. However, not all numbers are continuous and measurable

                                   Discrete data is counted, 

         Continuous data is measured                                         

                                             

Statistical Data Part II

Qualitative Data

Qualitative data is a categorical measurement expressed not in terms of numbers, but rather by means of a natural language description. In statistics, it is often used interchangeably with "categorical" data.

Qualitative data is descriptive information (it describes something)

Example:

• Your friends' favorite holiday destination
• The most common given names in your town
• How people describe the smell of a new perfume

Sastistical Data

What is Data?

Data is a collection of facts, such as numbers, words, measurements, observations or even just descriptions of things.

Qualitative vs Quantitative

Data can be qualitative or quantitative.

• Qualitative data is descriptive information (it describes something)
• Quantitative data, is numerical information (numbers).
  

Measure of Central Tendency (Exercise)

Exercises
1.The weekly salaries of six employees at McDonalds are $140, $220, $90, $180, $140, $200.  For these six salaries, find: 
                   
                   (a) the mean 
                   (b) the median 
                   (c) the mode
                                                                                                                             Answer
2.Andy has grades of 84, 65, and 76 on three math tests.  What grade must he obtain on the next test to have an average of exactly 80 for the four tests?

                                                                                                                              Answer

3.Test scores for a class of 20 students are as follows:
93, 84, 97, 98, 100, 78, 86, 100, 85, 92, 72, 55, 91, 90, 75, 94, 83, 60, 81, 95 

Test Scores Frequency 91-100  81-90  71-80  61-70 51-60

a) Copy and complete the table shown at the left.b) Find the modal interval.     The "modal interval" is the interval containing the       greatest frequency.  It is not the mode. c) Find the interval that contains the median.                                                                            Answer