CLASSIFYING THE DATA AS DISCREATE OR CONTINOUS
A quantitative variable is one which has a numerical value, and is often is called a numerical variable. The information collected is called numerical data.
Quantitative variable can be either discreate or continuous.
What is discrete data ?
A quantitative discreate variable takes exact number of values and is often a result of counting.
What is continuous data ?
A quantitative continuous variable takes numerical values within a certain continuous range. It is usually a result of measuring.
Difference between discrete and continuous data :
|
(1) Discrete data is one that has clear spaces between values. (2) Countable (3) It can take only distinct or separate values. (4) Bar Graph (5)Ungrouped frequency distribution (6) Function graph shows isolated points |
|
(1) Continuous data is one that falls on a continuous sequence. (2) Measurable (3) It can take any value in some interval. (4) Histogram (5) Grouped frequency distribution (6) Shows connected points |
Example 1 :
State whether these quantitative (or numerical) variables are discrete or continuous :
a) the time taken to run 1500 metres
b) the maximum temperature reached on a March day
c) the weight of cargo taken on a ship
d) the time taken for a battery to run down
e) the number of trips made by a taxi
f) the number of people in a theatre
g) the number of minutes spent sending text messages per day
Solution :
(a) Since time is measurable, it is continuous data.
(b) Since temperature is measurable, it is continuous data.
(c) Since weight is measurable, it is continuous data.
(d) Since time is measurable, it is continuous data.
(e) Since number of trips is countable, it is discrete data.
(f) Since number of people is countable, it is discrete data.
(g) Number of minutes is measurable, it is continuous data.
Example 2 :
20 students were asked “How many TV sets do you have in your household?” and the following data was collected:
2, 1, 0, 3, 1, 2, 1, 3, 4, 0, 0, 2, 2, 0, 1, 1, 0, 1, 0, 1
Is the data discrete or continuous? Why?
Solution :
The given data is discrete, because we cannot have part of TV.
If you have any feedback about our math content, please mail us :
v4formath@gmail.com
We always appreciate your feedback.
You can also visit the following web pages on different stuff in math.
WORD PROBLEMS
Word problems on simple equations
Word problems on linear equations
Word problems on quadratic equations
Area and perimeter word problems
Word problems on direct variation and inverse variation
Word problems on comparing rates
Converting customary units word problems
Converting metric units word problems
Word problems on simple interest
Word problems on compound interest
Word problems on types of angles
Complementary and supplementary angles word problems
Trigonometry word problems
Markup and markdown word problems
Word problems on mixed fractrions
One step equation word problems
Linear inequalities word problems
Ratio and proportion word problems
Word problems on sets and venn diagrams
Pythagorean theorem word problems
Percent of a number word problems
Word problems on constant speed
Word problems on average speed
Word problems on sum of the angles of a triangle is 180 degree
OTHER TOPICS
Time, speed and distance shortcuts
Ratio and proportion shortcuts
Domain and range of rational functions
Domain and range of rational functions with holes
Graphing rational functions with holes
Converting repeating decimals in to fractions
Decimal representation of rational numbers
Finding square root using long division
L.C.M method to solve time and work problems
Translating the word problems in to algebraic expressions
Remainder when 2 power 256 is divided by 17
Remainder when 17 power 23 is divided by 16
Sum of all three digit numbers divisible by 6
Sum of all three digit numbers divisible by 7
Sum of all three digit numbers divisible by 8
Sum of all three digit numbers formed using 1, 3, 4
Sum of all three four digit numbers formed with non zero digits
Recent Articles
-
How to Find the Product of Three Binomials
Oct 22, 21 01:12 AM
How to Find the Product of Three Binomials
-
Recurring Decimals to Fractions Worksheet
Oct 21, 21 10:04 PM
Recurring Decimals to Fractions Worksheet
-
Recurring Decimals to Fractions
Oct 21, 21 09:59 PM
Recurring Decimals to Fractions
