The table below gives the number of hours spent watching TV...

The table below gives the number of hours spent watching TV last week by a sample of 24 children. 69 34 90 72 68 22 20 30 79 90 39 73 34 37 54 83 64 71 48 68 24 47 94 19 Range = 75 Standard Deviation = Round your answers to the nearest hundredth as needed. Question Help: Video 1 Video 2 Submit Question

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00:01 In this situation they want us to use our calculator to calculate the range and standard deviation of this table, which is the table, is the hour's spin watching tv by a sample of 24 children.

00:13 So all we have to do is input this data into a calculator.

00:17 I'm going to use the ti -84, which is a very popular high school calculator.

00:22 And when you want to use statistics in this calculator, you go here to stat.

00:27 And here in edit, you can input data.

00:30 So here i already have some data which i'm going to clear.

00:34 So we have a clean slate.

00:36 And now we just input the data.

00:38 You can input it in any order that you want.

00:41 So i'm going to input that.

00:43 90, 23, 66, 65.

00:48 You can do this also in excel if you want, but here because they want to do it with the calculator, or we do it with the calculator.

00:55 43.

00:56 Just make sure that you input the data correctly because that's usually the main source of mistakes 30 50 but other than that it should not be any trouble 26 38 21 36 then we have 89 59 89 84 and 43 then we have 69 33 35 91 this is a little boring but you have to do it with a lot of concentration you can because if one error and then every all the numbers will be wrong so now that we have all the data input it is usually recommended that that that you check it so i'm going to do a little quick check yes 65 are good 3643 30 2050 20 50 26 38 because usually like i said this is the main source of errors 89 59 343 69 33 33 35 16 let's see 43 69 33 35 91 good 55 58 90 and 60 now that that is done all we have to do is go here to statistics again and now we're going to do calculations so calculation and here we want one variable statistics the first one so we tell it where it is list one that's where it is and we calculate and that's it this gives us all the information that we want in this case this copy that information it gives you all kinds of information of the data so let me put it here and it has a little more information in the bottom so let's go to that oops here i'm gonna go to that here we go to that here we go and copy the rest of the information that we might have so here the range they did it correctly...

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