Zadanie 1d
Find p and q for the regression of L on T, L=pT+q.
Predicting x from y
Use the regression of x on y for prediction and distinguish it from reversing the regression of y on x.
Tę umiejętność sprawdza 7 zadań wzorowanych na arkuszach IB z lat 2022–2026.
Zadania sprawdzające tę umiejętność: 7 Otwórz w wyszukiwarce z filtrami
Zadanie 4a
Use the appropriate regression equation to estimate height for a tree whose crown is 6 m wide.
Zadanie 4b
Find the mean height and the mean crown width.
Zadanie 5c
For a missing A reading with y=130, the technician rearranges 130=1.069x+2.184 and rounds to 120. (i) Explain the problem with this method. (ii) Use an appropriate method to show that the estimate is 119 to the nearest integer.
Zadanie 3b
Find a regression equation suitable for predicting bookings x from visitor count y.
Zadanie 3c
Hence predict bookings for a nine-hour opening period.
Zadanie 2b
(i) Predict c when a=44. (ii) Find the mean of the a readings.
- Materiał graficzny