You choose what the classes will probably be. Since the tiniest value is 1.99 and the biggest value is 30.05,

**The classes:**

0 to under 5

5 to under 10

10 to under 15

15 to under 20

20 to under 25

25 to under 30

30 to under 35

A grouped frequency table includes data which has been put into various groups. The table shows data about the heights of 30 individuals. The heights have been arranged. Each group is known as a class interval. In the table, every class interval is of the same width (5cm).

A frequency table is a method to analyze and organize data. A data set possessing small number of distinct values could be presented in frequency table.

**Steps for Making
Frequency Table:**

**Step 1:** Collect a
certain set of data to put into the frequency table.

**Step 2:** Set up
the data into various groups referred to as classes with their related
frequencies.

**Step 3:** The 1st
column exhibits what is getting arranged in ascending order and another for that
frequencies.

**Step 4:** Tally the
data into classes. Every data value fall into exactly a single class. Count the
tally's and record outcome.

The cumulative frequency table is an overall of frequencies via the classes of a frequency distribution. The cumulative frequency for every class interval is actually the frequency for that class interval put into the preceding cumulative total. Cumulative frequency also can describe as the amount of all previous frequencies up to the existing point. The cumulative frequency table is helpful when symbolizing data using diagrams such as histograms.

**Solved Example**

**Question:** The
pair of data below displays the height of learners. Draw a cumulative frequency
table for that data.

Height
of the Students |
Frequency (f) |

1 - 10 |
3 |

11 - 20 |
5 |

21 - 30 |
7 |

31 - 40 |
10 |

41 - 50 |
4 |

Answer:

Cumulative frequency table for that data.

Height of the Students |
Frequency (f) |
Cumulative Frequency (cf) |

1 - 10 |
3 |
3 |

11 - 20 |
5 |
3 + 5 = 8 |

21 - 30 |
7 |
8 + 7 = 15 |

31 - 40 |
10 |
15 + 10 = 25 |

41 - 50 |
4 |
25 + 4 = 29 |

**Interesting Facts about Platinum**

Not many chemicals can attack gold, so that’s why it maintains it shine even when buried for 1000’s of years. When compared with other metals, gold is much softer. One can beat 1 gram of gold to a 1 square meter sheet and light would shine via that sheet.

**Interesting Facts about Wind Energy**

Fruit is beautiful, tasty and great for all us. Fruit is also interesting. Listed here is a brief collection of interesting facts about fruit.

Liquid rock which cools quickly after exposure to the Earth’s atmosphere are fine-grained and known as extrusive. Obsidian is an example of this kind of rock.