f1 Look at the scatter diagrams below. Describe the data.

Transcription

1 f Look at the scatter diagrams below. Describe the data. Ice creams Sandwiches Increase Hours of rain Decrease As the hours of sun increase the number of ice creams increases. As the hours of rain increase the number of sandwiches decreases.

2 f Look at the scatter diagrams below. Describe the data. Ice creams Sandwiches Increase Hours of rain Decrease Positive correlation As the hours of sun increase the number of ice creams increases. Negative correlation As the hours of rain increase the number of sandwiches decreases.

3 f The scatter diagram shows information for Rome. Increase Decrease o C Maximum temperature o C shine Describe the data.

4 f The scatter diagram shows information for Rome. Increase Decrease o C Maximum temperature o C shine Answer o C Describe the data. There is a positive correlation.

5 f Look at the scatter diagram below. Describe the data. Increase Decrease Fish & Chips Chips 6 7 9

6 f Look at the scatter diagram below. Describe the data. Increase Decrease Fish & Chips Chips No correlation

7 Cans of cola f Estimate how many cans of cola are on a day with hours of sun hours of sun cola = 6 7 9

8 Cans of cola f Estimate how many cans of cola are on a day with hours of sun hours of sun cola = Answer cans Definitely,, Estimate,,

9 Sandwiches ev a b Describe the data. Estimate how many sandwiches are on days with hours of sun. Increase Decrease 6 7 9

10 Sandwiches ev a b Describe the data. Estimate how many sandwiches are on days with hours of sun. Increase Decrease Answer a Positive correlation b

11 li When hours of sun is hours, an estimate of sales of ice creams is. Sales of ice cream hours of sun ice cream On th June there are hours of sun. June hours of sun ice cream Will there definitely be ice creams? Definitely,, Estimate,,

12 li When hours of sun is hours, an estimate of sales of ice creams is. Sales of ice cream hours of sun ice cream On th June there are hours of sun. June hours of sun ice cream Will there definitely be ice creams? Definitely,, Estimate,, Answer No. An estimate of ice creams is.

13 ex D. Scatter diagrams A Cans of cola B Cut out the cards below. Use the scatter diagrams to decide if each card is true or false. Umbrellas The number of cans of 6 cola increases with the hours of sun. 7 When there are hours of sun, there will definitely be cans of cola. 9 The number of umbrellas decreases when there are more hours of sun. Connective Maths Toolbox Toticity True False There is no correlation between umbrellas and hours of sun. There is positive correlation between sales of cola and hours of sun. There is negative correlation between sales of umbrellas and hours of sun. The point (, ) on diagram A could be a mistake. The number of umbrellas increases with the hours of sun. The point (, ) on diagram B must be a mistake. When there is no sun, an estimate of the number of umbrellas is.

14 ex D. Scatter diagrams Cut out the cards below. Use the scatter diagrams to decide if each card is true or false. True There is positive correlation between sales of cola and hours of sun. There is negative correlation between sales of umbrellas and hours of sun. The point (, ) on diagram A could be a mistake. The number of cans of cola increases with the hours of sun. There is no correlation between umbrellas and hours of sun. 7 6 False When there are hours of sun, there will definitely be cans of cola. The point (, ) on diagram B must be a mistake. The number of umbrellas increases with the hours of sun. 9 The number of umbrellas decreases with there are more hours of sun. When there is no sun, an estimate of the number of umbrellas is. Connective Maths Toolbox Toticity

15 ex D. Scatter diagrams / Wykres rozrzutu. Wytnij poniższe karty. Za pomocą wykresu rozrzutu zdecyduj które zdania są prawdziwe a które nie. A Liczba sprzedanych puszek coli Ilość godzin słonecznych True False Prawda Fałsz Nie ma korelacji pomiędzy ilością sprzedanych parasoli a godzinami słonecznymi. Korelacja pomiędy sprzedażą puszek coli a godzinami słonecznymi jest dodatnia. B Liczba sprzedanych parasoli Ilość godzin słonecznych Korelacja pomiędy sprzedażą parasoli a godzinami słonecznymi jest ujemna. Punkt (,) na wykresie B może być błędem. 6 Ilość sprzedanych puszek coli wzrasta wraz z ilością godzin słonecznych. 7 W czasie godzin słonecznych z pewnością zostanie sprzedanych puszek coli. 9 Ilość sprzedanych parasoli spada wraz ze wzrostem ilości godzin słonecznych. Ilość sprzedanych parasoli wzrasta wraz z ilością godzin słonecznych. Punkt (,) na wykresie B z pewnością jest błędem. Gdy słońce nie świeci to oszacowana liczba sprzedanych parasoli wynosi. Connective Maths Toolbox Toticity

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