Basic Terms in Statistics
The science of collecting, classifying, summarizing, organizing, analyzing, and interpreting numerical information.
Statistics
What type of data is: opinion on a statement ranging from 'strongly agree' to strongly disagree'?
ordinal
The 'middle value' when all values are arranged in the order of size.
median
The most popular/occurring data.
mode
What method will be appropriate when you want to determine 'the lifetime of a battery'?
Experiment
John wants to find out whether the artificial coloring used in various drinks is harmful or not to the human body.
What method should John use to collect the data?
Experiment
9.5
What are the three measures of central tendency?
mean, median, mode
The range of the grouped data: 2, 5, 1, 8, 3, 12, 4
11
What type of data is 'hair color'?
Quantitative, nominal
What type of data is: the number of people in your family?
discrete
What is the mean of the following data: 3, 8, 5, 11, 13, 9, 5, 3, 11, and 5?
7.3
The 'common average' that people knows.
mean
Which of the following is not a measure of variability?
variance, range, mode, standard deviation
mode
This can be done through face-to-face interviews, telephone inquiries, and self-completed questionnaires.
Conducting Survey
What will be the next class of the interval:
Class Interval:
10-15
16-21
22-27
28-33
What is the modal class of the grouped data?
20-30
What is the mode of the following data?
28.8
What is the range of the data?
25
A type of graph which has sectors which represents a proportion of the whole.
pie graph
A graph which displays information that changes continuously over a period of time.
Line graph
What is the median class of the grouped data?