Question

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Answer 1

Answer:

yes 7 is x i think so

Step-by-step explanation:

Because all are in difference of 2

Answer 2

Answer:

Step-by-step explanation:

you are given with values and an unknown values in the data.

use the formula of mean. so,

mean = sum of all observations / number of observations

7 = 3 + 5 + 9 + x +11 + 7 / 5

7 = 35 + x / 5

taking 5 to left side and multiplying with 7

35 = 35 + x

therefore x = 0

hope it helps you