Page 151 - Data Science class 10
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• Did you get similar answers using the different measuring tools? Why or why not? Did you get identical answers
              using the different measuring tools? Why or why not?
               • Which measuring tool do you think gave you more accurate results, the ruler or the yardstick? Why?
               • Do you think a tape measure would be more or less accurate than a ruler or a yardstick? Why? If you have a
              tape measure available, use it to measure the same room five times and see how the results compare with your
              previous measurements.
            Which method(s) used by the participants produced the most variation? Which method(s) produced the least
            variation? How do your results compare with those of the onscreen participants?
            Using a meter stick, measure the heights (without shoes) and arm spans (fingertip to fingertip) of three men and
            three women. Record your measurements to the nearest centimeter.
            Problem 2: Height Measurement

            Let’s study two more statistical questions. For example, suppose you were curious about the relative heights and
            arm spans of men and women.

            1. Ask a Question
            Are men typically taller than women?
            Do men typically have longer arm spans than women?

            2. Collect Data
            Using a meter stick, measure the heights (without shoes) and arm spans (fingertip to fingertip) of three men and
            three women. Record your measurements to the nearest centimeter.
            a.  Did you get the same height for all six people? Did you get the same arm span for all six people? Why or why
              not?
            b. If you measure all six heights and arm spans again, would the results be identical? Why or why not?
            Let’s look at heights and arm spans again, this time measuring 24 people. Here are their data [heights (without
            shoes) and arm spans were measured to the nearest centimeter, using a meter stick]:

                            Gender       Height     Arm Spam         Gender       Height    Arm Spam

                             Male          185         173            Male         180         184
                            Female         160         161           Female        162         159
                             Male          173         177            Male         187         188

                            Female         170         170            Male         186         200
                            Female         188         188            Male         182         188
                             Male          184         196           Female        160         157

                            Female         162         156            Male         181         188
                            Female         170         162            Male         192         188
                             Male          176         177           Female        167         170

                            Female         166         165           Female        176         173
                             Male          193         194           Female        155         160

                             Male          178         178           Female        162         161
            Problem 3: How Long Is a Minute?
            1. Ask a Question

            How well can people judge the time it takes for a minute to pass?

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