Mr. McGregor has 28 students in his class. He selects 10 students and records their heights in centimeters. The height of each student is shown. 158, 164, 140, 151, 184, 150, 157, 153, 153, 160 Based on the sample, what is the best estimate for the median height of his students?
Question
Mr. McGregor has 28 students in his class. He selects 10 students and records their heights in centimeters. The height of each student is shown. 158, 164, 140, 151, 184, 150, 157, 153, 153, 160 Based on the sample, what is the best estimate for the median height of his students?
Solution
To find the median height of Mr. McGregor's students, follow these steps:
- Arrange the heights in ascending order: 140, 150, 151, 153, 153, 157, 158, 160, 164, 184
- Since there are 10 numbers, the median will be the average of the 5th and 6th numbers.
- The 5th number is 153 and the 6th number is 157.
- The median is (153 + 157) / 2 = 155.
So, the best estimate for the median height of his students is 155 cm.
Similar Questions
The height (in cm) of 50 students of a class are given below. Find the median.
The average height of 50 students in class is 182 cm. 40 students whose average height is 182.5 cm left the class and 50 students whose height is 180.5 cm joined the class. Find the average height of the present? Options180.411804.41182.41183.41
The average height of a group of students was 134.4 cm.When Mr Lim measured and recorded the height of these students, he wronglyrecorded one student's height as 193 cm when it should have been 139 cm.As a result, Mr Lim calculated the average height as 143.4 cm.How many students were there in the group?
For an upcoming government project, you are required to find the average height of the students in Class VIII of a given school. Instead of asking every student, you took a few students as your sample and noted their heights in the table given below. Roll Number Height8012 121.92 cm8045 133.21 cm8053 141.34 cm8099 126.23 cm8125 175.74 cmQuestion 1/3MandatorySamplingWhat is the size of the sample that you have taken?540334698.4410
In a class of 50 boys and 30 girls, the average heights of the two groups of boys and girls are 150 cm and 140 cm respectively. The average height of the class isQuestion 18Answera.146.5b.146.25c.146d.146.75
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.