Chapter 14 – Statistics

2. While computing mean of grouped data, we assume that the frequencies are 2. While computing mean of grouped data we assume that the frequencies are November 26, 2020 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class 10 ,

Choose the correct answer from the given four options: 1. In the formula x = a + ∑fidi/∑fi For finding the mean of grouped data di’s are deviations from a of Choose the correct answer from the given four options: 1. In the formula x = a + ∑fidi/∑fi For finding the mean of grouped [...]

The annual profits earned by 30 shops of a shopping complex in a locality give rise to the following distributions: Draw both ogives for the above data and hence obtain the median. The annual profits earned by 30 shops of a shopping complex in a locality give rise to the following distributions: Draw both ogives [...]

The median of the following data is 525. Find the values of x and y, if the total frequency is 100 if the total frequency is 100 The median of the following data is 525. Find the values of x and y October 6, 2020 Category: Chapter 14 - Statistics , Maths , NCERT Class [...]

A survey regarding the height (in cm) of 51 girls of class X of a school was conducted and the following data was obtained: Find the median height. A survey regarding the height (in cm) of 51 girls of class X of a school was conducted and the following data was obtained: Find the median [...]

The mark distribution of 30 students in a mathematics examination are given. Find the mode of this data. Also compare and interpret mode and the mean. The mark distribution of 30 students in a mathematics examination are given. Find the mode of this data. Also compare and interpret mode and the mean. October 6, 2020 [...]

A survey conducted on 20 households in a locality by a group of students resulted in the following frequency table for the number of family members in a household. Find the mode of this data. A survey conducted on 20 households in a locality by a group of students resulted in the following frequency table [...]

The distribution given below shows the number of wickets taken by bowlers in one-day cricket matches. Find the mean number of wickets by choosing a suitable method. What does the mean signify ? The distribution given below shows the number of wickets taken by bowlers in one-day cricket matches. Find the mean number of wickets [...]

The table below gives the percentage distribution of female teachers in the primary schools of rural areas of various states and union territories (U.T.) of India. Find the mean percentage of female teachers by all the three methods discussed in this section. The following table gives the distribution of the life time of 400 neon [...]

The marks obtained by 30 students of Class X of a certain school in a Mathematics paper consisting of 100 marks are presented in table below. Find the mean of the marks obtained by the students. The marks obtained by 30 students of Class X of a certain school in a Mathematics paper consisting of [...]