# The blood groups of 30 students are recorded as follows:

A, B, O, A, AB, O, A, O, B, A, O, B, A, AB, B, A, AB, B, A, A, O, A, AB, B, A, O, B, A, B, A

Prepare a frequency distribution table for the data.

**Solution:**

The number of students who have a certain type of blood group is known as the frequency of those blood groups.

__Frequency distribution__ table of the given data is

Blood group | Number of students |

A | 12 |

B | 8 |

AB | 4 |

O | 6 |

Total | 30 |

Therefore, the frequency distribution table for the given data is mentioned above.

**✦ Try This: **The following observations are arranged in ascending order : 32, 30, 35, 22, x, x + 2, 72, 70, 85, 90. If the median is 50, find the value of x.

**☛ Also Check:** NCERT Solutions for Class 9 Maths Chapter 14

**NCERT Exemplar Class 9 Maths Exercise 14.3 Problem 1**

## The blood groups of 30 students are recorded as follows: A, B, O, A, AB, O, A, O, B, A, O, B, A, AB, B, A, AB, B, A, A, O, A, AB, B, A, O, B, A, B, A. Prepare a frequency distribution table for the data.

**Summary:**

The blood groups of 30 students are recorded as follows: A, B, O, A, AB, O, A, O, B, A, O, B, A, AB, B, A, AB, B, A, A, O, A, AB, B, A, O, B, A, B, A. The frequency distribution table for the data is mentioned above

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