Please refer to **Case Study Chapter 13 Statistics Mathematics** with answers provided below. These case study based questions are expected to come in the upcoming Class 10 Mathematics examinations. We have provided case study questions class 10 maths for all chapters on our website as per the latest examination pattern issued by CBSE, NCERT, and KVS.

**Chapter 13 Statistics Case study Questions Class 10 Maths**

**I The COVID-19 pandemic, also known as coronavirus pandemic, is an ongoing pandemic of coronavirus disease caused by the transmission of severe acute respiratory syndrome coronavirus 2 The following tables shows the age distribution of case admitted during a day in two different hospitals**

**Question. The mean of the given data is **

(a) 26.2

(b) 32.4

(c) 33.5

(d) 35.4

**Answer**

D

**Question. The median of the given data is **

(a) 32.7

(b) 40.2

(c) 42.3

(d) 48.6

**Answer**

B

**Question. The mode of the given data is **

(a) 41.4

(b) 48.2

(c) 55.3

(d) 64.6

**Answer**

A

**Question. The average age for which maximum cases occurred is **

(a) 32.24

(b) 34.36

(c) 36.82

(d) 42.24

**Answer**

C

**Question. The upper limit of modal class is **

(a) 15

(b) 25

(c) 35

(d) 45

**Answer**

D

**II Electricity energy consumption is the form of energy consumption that uses electric energy. Global electricity consumption continues to increase faster than world population, leading to an increase in the average amount of electricity consumed per person (per capita electricity consumption).**

**A survey is conducted for 56 families of a Colony A. The following tables gives the weekly consumption of electricity of these families.**

**The similar survey is conducted for 80 families of Colony B and the data is recorded as below:**

**Question. The modal class of the above data is I **

(a) 0-10

(b) 10-20

(c) 20-30

(d) 30-40

**Answer**

C

**Question. The mean weekly consumption is **

(a) 15.65 units

(b) 32.8 units

(c) 38.75 units

(d) 48 units

**Answer**

C

**Question. The median weekly consumption is **

(a) 12 units

(b) 16 units

(c) 20 units

(d) None of these

**Answer**

C

**Question. The modal weekly consumption is **

(a) 38.2 units

(b) 43.6 units

(c) 26 units

(d) 32 units

**Answer**

B

**Question. The mean weekly consumption is **

(a) 19.64 units

(b) 22.5 units

(c) 26 units

(d) None of these

**Answer**

A

**I. Student-Teacher Ratio: Student-teacher ratio expresses the relationship between the number of students enrolled in a school and the number of teachers in that school. It is important for a number of reasons. For example, it can be an indicator of the amount of individual attention any child is likely to receive, keeping in mind that not all class size are going to be the same. The following distribution gives the state-wise student-teacher ratio in higher secondary schools of India (28 states and 7 UTs only).**

**Question. The formula for assumed mean method to find the mean is **

(a) A −∑fi di /∑fi

(b) A + ∑fi/∑fi di

(c) A × ∑fi di/∑fi

(d) A + ∑fi di/∑fi

**Answer**

D

**Question. The mean of the above data is **

(a) 29.2

(b) 30.5

(c) 38.3

(d) 40.1

**Answer**

A

**Question. The sum of class marks of 25-30 and 45-50 is **

(a) 62

(b) 70

(c) 75

(d) 85

**Answer**

C

**Question. The sum of the upper and lower limits of modal class is **

(a) 55

(b) 65

(c) 85

(d) 75

**Answer**

B

**Question. In order to find the mean by direct method, we use the formula **

(a) ^{ni=i}∑fi xi//n

(b) n/^{n}_{i=i}∑fi xi

(c) n x ^{n}_{i=i}∑fi xi

(d) n + ^{n}_{i=i}∑fi xi

**Answer**

A

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