Skip to content

Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

RELATED QUESTIONS

Reliability

Class 9 Science के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ScienceIf the independent-variable values are correct but the dependent variable is measured by a different method each time, which quality is most affected?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceThree measurements are taken at each value of the independent variable. What is the main benefit?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceIn an experiment enzyme activity is measured at four temperatures. A different enzyme concentration is used at each temperature. Why are the results unreliable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceOnly one measurement was taken at each value of the independent variable. Which change would make the results more reliable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceIn an experiment plant growth is measured at five different fertilizer amounts. What is the purpose of using three plants at each amount?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceIf an experiment on the effect of fertilizer is conducted using only one plant what is the greatest limitation?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceIn comparing the cleaning ability of three soaps a different type of stain was placed on each cloth. Why would the result be unreliable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceAn experiment produced different mean results for two groups but each group contained only two samples. What is the most scientific next step?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceIf increasing the sample size leaves the mean result nearly unchanged but reduces uncertainty what is the most appropriate interpretation?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceWhile measuring plant growth the student sometimes measured to the highest leaf and sometimes to the top of the stem. What problem occurred?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceDifferent scientists obtain similar results when they perform the same experiment using the same method. Which quality does this demonstrate?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceIn an experiment only one plant was kept in sunlight and one in shade. What is the best way to make the conclusion more reliable?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceA student's experiment supports a hypothesis but the same experiment gives a different result at another school. What does this indicate?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceWhich experimental plan would most reliably test whether exercise increases pulse rate?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceIf the experimental method changes slightly between trials which quality will decrease first?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceIn which situation will repetition improve reliability but not validity?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceIf an experiment has a sample size of only one what is the main limitation?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceIf repeated trials produce widely different results what should be the first scientific step?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceA student slightly changes the procedure after every trial but averages all results together. What is the problem?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceA student measures length five times but starts from a different position each time. What is the most likely cause of variation?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard