Question

♦ Explain grouped frequency distribution.
♦ Explain 27 theorem of circles​

Answer 1

Answer:

To construct a grouped frequency distribution, the data are sorted and separated into groups called classes.  Usually 5 to 20 classes are used, but in any case, make sure that you use enough classes to give a good description of the data.  The number (frequency) of data belonging to each class is then recorded in a table of frequencies called a frequency table.  This table describes the distribution of frequencies.

There are 5 rules for the classes in a grouped frequency distribution.

1.  The classes must be mutually exclusive (non-overlapping).  This means that there is no way that any of the data could fall into 2 different classes at once.

2.  The classes must be continuous.  This means that there can be no gaps in the classes.  Even if there are no values in a particular class, you cannot omit that class unless it is the first or last class (in which case it should not have been included in the first place).

3.  The classes must be exhaustive.  This means that there must be a class for every data value in the data set so that every data value is included in the frequency distribution.

Step-by-step explanation:

here is your 1 answer

Answer 2

$\huge \bf \underline \red{ \alpha nswer}$

➠ To construct a grouped frequency distribution, the data are sorted and separated into groups called classes. ... The number (frequency) of data belonging to each class is then recorded in a table of frequencies called a frequency table. This table describes the distribution of frequencies.

➠The perpendicular from the centre of a circle to a chord will always bisect the chord (split it into two equal lengths). Angles Subtended on the Same Arc. Angles formed from two points on the circumference are equal to other angles, in the same arc, formed from those two points.

• Circle Theorem 1 - Angle at the Centre.
• Circle Theorem 2 - Angles in a Semicircle.
• Circle Theorem 3 - Angles in the Same Segment.
• Circle Theorem 4 - Cyclic Quadrilateral.
• Circle Theorem 5 - Radius to a Tangent.
• Circle Theorem 6 - Tangents from a Point to a Circle.
• Circle Theorem 7 - Tangents from a Point to a Circle II.

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