Question

pls pls give answers of these it's urgent. Question 2 Rohit finds the arithmetic mean of a given data. He compares the arithmetic mean with different values in the data. What will he observe?
A  The arithmetic mean is smaller than the smallest value in the given data
B  The arithmetic mean is larger than the largest value in the given data
C  The arithmetic mean is always close to the largest value in the given data
D  The arithmetic mean is a value that lies somewhat between the smallest and the largest value of the given data
Question 3The weight (in kg) of 11 people in a group is given below:
46, 55, 76, 68, 70, 73, 81, 68, 70, 51, 70
Which of the following is correct?
A  Mode and median of the given data are equal
B  Mode and arithmetic mean of the given data are equal
C  Median and arithmetic mean of the given data are equal
D  Mode, median and arithmetic mean of the given data are equal
Question 4 A shoe manufacturing company wants to increase the production of the size which is more popular in the market. Which of the following representative values can help them in finding this size?
A  Mode
B  Median
C  Arithmetic mean
D  Any of the above
Question 5 The heights of 7 students (in cm) of Class 7 are given below:
122, 125, 120, 127, 122, 127, 126
What is the median height of the students?
 A  120 cm 
 B  122 cm
 C  125 cm 
 D  127 cm

Question 6 Given below is the number of chocolates sold by a grocery store during the first 12 days of a month:
25, 34, 21, 48, 34, 29, 30, 34, 34, 35, 27, 28
What is the mode of this data?
 A  25
 
 B  30
 C  34 
 D  48
Question 7 State whether the statement is true or false.
The mean of a set of numbers is always less than the smallest of the given numbers.
A  True
B  False
Question 8 Find the median of first 11 odd numbers.
A  11
B  13
C  9
D  15
Question 9 The marks of 11 students in a Mathematics test are 72, 41, 87, 56, 76, 88, 58, 74, 63, 42, 75. Find the median of the marks scored.
A  63
B  72
C  74
D  75
Question 10 The temperatures recorded in a town on 7 days of a certain week are 27.8 °C, 32.6 °C, 31.2 °C, 24.6 °C, 34.6 °C, 23.8 °C and 26.3 °C. Find the lowest and highest temperature recorded in the week.
A  26.3 °C, 32.6 °C
B  26.3 °C, 34.6 °C
C  23.8 °C, 34.6 °C
D  23.8 °C, 32.6 °C
Question 11 Find the median of the first 15 whole numbers.
A  5
B  7
C  6
D  8
Question 12 Find the mean of the first ten natural numbers.
A  4
B  4.5
C  5.5
D  6
Question 13 The temperatures recorded in a town on 7 days of a certain week are 27.8 °C, 32.6 °C, 31.2 °C, 24.6 °C, 34.6 °C, 23.8 °C and 26.3 °C. Find the mean of the temperatures recorded.
A  29.6 °C
B  28.4 °C
C  28.7 °C
D  27.8 °C
Question 14 The marks of 10 students in a Mathematics test are 72, 41, 87, 56, 76, 88, 58, 74, 63, 42. Find the mean of the marks scored.
A  65.7
B  66.4
C  64.8
D  65.2
Question 15 The marks of 10 students in a Mathematics test are 72, 41, 87, 56, 76, 88, 58, 74, 63, 42. Find the lowest and highest marks obtained by the students.
A  42, 88
B  41, 88
C  41, 89
D  42, 89
Question 16 State whether the statement is true or false.
The mode of a collection of numbers is always one of the given numbers.
A  True
B  False
Question 17 Consider the numbers 45, 33, 46, 34, 46, 43, 45, 34, 56, 34, 45, 57, 68, 45, 34, 46, 56, 46, 56. How many modes does this data have?
A  1
B  2
C  3
D  4
Question 18 Find the mode of the numbers 34, 45, 33, 46, 34, 46, 43, 45, 34, 56, 34, 45, 57, 68, 45, 34, 46, 56, 46, 56.
A  34
B  46
C  45
D  56
Question 19 State whether the statement is true or false.
The mean of a collection of numbers is always one of the given numbers.
A  True
B  False
Question 20 The temperatures recorded in a town on 7 days of a certain week are 27.8 °C, 32.6 °C, 31.2 °C, 24.6 °C, 34.6 °C, 23.8 °C and 26.3 °C. Find the range of the temperatures recorded.
A  9.6 °C
B  9.8 °C
C  10.6 °C
D  10.8 °C​

Answer 1

Answer:

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Answer 2

Answer:

(i) Highest number = 9

(ii) Lowest number = 1

(iii) Range = (9 − 1) = 8

(iv) Sum of all the observations = 4 + 6 + 7 + 5 + 3 + 5 + 4 + 5 + 2 + 6 + 2

+ 5 + 1 + 9 + 6 + 5 + 8 + 4 + 6 + 7

= 100

Total number of observations = 20