The table shows the number of hours that a grouped of students spent studying for the sat during their first week of preparation. the students each add 4 hours to their study times in the second week. what are the mean, median, mode, and range of times for the second week? student hours bob 19 james 10 karen 15 rosario 17 antoine 10 julio 16 maria 13

Mean = 18.30

Median= 19

Mode =14

Range = 9

Step-by-step explanation:

The given table shows the number of hours that a grouped of students spent studying for the SAT during their first week of preparation.

StudentHours

Bob19

James10

Karen15

Rosario17

Antoine10

Julio16

Maria13

After adding 4 hours, the table for the second week will be :-

StudentHours

Bob23

James14

Karen19

Rosario21

Antoine14

Julio20

Maria17

Number of students n= 7

Now, according to the second week table,

Mode =14 hours

Mean=

For median arrange the above table hours in ascending order,

14, 14, 17, 19, 20, 21, 23

Median=

Range = Highest - lowest =23-14=9

answer: 45

first option

a function is a relation in which an input is paired with exactly one output.

so, let's find the right answer.

in our first option, our inputs are january, february, and march. the outputs are 30, 28, and 25. each input has it's own output. this is correct!

our second option we know is incorrect, because ms. valverade has two outputs, dogs and cats. this is not a function.

our third option is incorrect as well. the yellow square has two ouputs, the square and the triangle.

lastly, in our fourth option, we see the number 7 two times with a different output. therefore, this is not a function.

remember: each input must be paired with only one output!