28 (Exam Math ONET ก.พ.-65-ข้อ12)

Understanding the Median

Statistics is a branch of mathematics. It involves the collection and study of data, which allows researchers to make inferences or determinations about a certain topic. The analysis of quantitative data can be used to study anything from demographics, populations, and investments among other things.

A median is the middle number in a sorted list of numbers (either ascending or descending) used in statistical studies. To determine the median value in a sequence of numbers, the numbers must first be sorted or arranged in value order from lowest to highest or highest to lowest.

Braggs Raw Apple Cider Vinegar

Available at almost any grocery store and online, Bragg’s offers raw and unfiltered apple cider vinegar that contains the “mother”, which includes numerous strains of beneficial bacteria. If you’re looking for an acv supplement, bragg apple cider vinegar capsules are a great options too! 

27 (Exam Math ONET ก.พ.-65-ข้อ11)

How to represent the arithmetic sequence?

If “a” is the first term and “d” is the common difference of an arithmetic sequence, then it is represented by a, a+d, a+2d, a+3d, …

How to represent the geometric sequence?

If “a” is the first term and “r” is the common ratio of a geometric sequence, then the geometric sequence is represented by a, ar, ar², ar³, …., ar^n-1, ..

26 (Exam Math ONET ก.พ.-65-ข้อ10)

Arithmetic Sequences

A sequence in which every term is created by adding or subtracting a definite number to the preceding number is an arithmetic sequence.

Geometric Sequences

A sequence in which every term is obtained by multiplying or dividing a definite number with the preceding number is known as a geometric sequence.