Question

please answer me please ​

Answer 1

Answer:

a=1,b=b

Step-by-step explanation:

88 86.3 it's wery correct answer

Answer 2

$\huge\bf{Answer :}$

The picture of data is in the attachment.

Ques-27 :-

Answer : c) 30 ✔️

Explanation :

• We known that, range is the difference of the highest observation and lowest observation.
• Here, Highest observation = 100 and Lowest observation = 70.

∴ Range of the data = 100-70 = 30

Ques-28 :-

Answer : d) 95 ✔️

• Mode is the observation that has occurred maximum times in a data.
• Here, the observation 95 has occurred 3 times.
• Therefore, 95 is the mode of the data.

Quest-29 :-

Answer = c) 88 ✔️

Explanation :

The median can be obtained by following steps :

• First, arrange the data in the ascending order.

• The data would be come out after ascending order would be :-

70,75,80,80,85,86,90,90,95,95,95,100

• Here, n = 12, which is even (n = number of observation)

∴ Median = mean of the two middlemost observation

⇒ ( 86 + 90 ) / 2 = 88

Ques-30 :-

Answer : a) 86.3 ✔️

• We know that mean is the sum of all observation divided by the total number of observations.
• Here, the sum of 12 observations is divided by the total number of observations.
• Since, the mean comes out to be 86.75 but after rounding off we get the mean as 86.3.