OSWAAL CBSE Sample Question Papers, MATHEMATICS (Stand 4
(ii) 15
(a) What is the modal class of the given data?
(i) 85-100 (ii) 100-115 (iii) 115-130
(iv) 130-145
(b) What is the value of class interval for the given data set?
(i) 10
(iii) 5
(iv) 20
(c) What is the median class of the given data?
(i) 85-100
(ii) 100-115 (iii) 115-130
(iv) 130-145
(d) What is the median blowing speed?
(i) 109.17 km/hr
(ii) 109.71 km/hr
(iii) 107.17 km/hr
(iv) 109.19 km/hr
(e) What is the sum of lower limit of modal class and upper limit of median class?
(i) 100
(ii) 200
(iii) 300
(iv) 400​

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

answerim :

n

step-by-step explanation:

im not sure but my dad knows

the first option i believe

step-by-step explanation: